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Genes predisposing to syndromic and nonsyndromic infertility: a narrative review

Abstract

Background

Advanced biological techniques have helped produce more insightful findings on the genetic etiology of infertility that may lead to better management of the condition. This review provides an update on genes predisposing to syndromic and nonsyndromic infertility.

Main body

The review identified 65 genes linked with infertility and infertility-related disorders. These genes regulate fertility. However, mutational loss of the functions of the genes predisposes to infertility. Twenty-three (23) genes representing 35% were linked with syndromic infertility, while 42 genes (65%) cause nonsyndromic infertility. Of the 42 nonsyndromic genes, 26 predispose to spermatogenic failure and sperm morphological abnormalities, 11 cause ovarian failures, and 5 cause sex reversal and puberty delay. Overall, 31 genes (48%) predispose to male infertility, 15 genes (23%) cause female infertility, and 19 genes (29%) predispose to both. The common feature of male infertility was spermatogenic failure and sperm morphology abnormalities, while ovarian failure has been the most frequently reported among infertile females. The mechanisms leading to these pathologies are gene-specific, which, if targeted in the affected, may lead to improved treatment.

Conclusions

Mutational loss of the functions of some genes involved in the development and maintenance of fertility may predispose to syndromic or nonsyndromic infertility via gene-specific mechanisms. A treatment procedure that targets the affected gene(s) in individuals expressing infertility may lead to improved treatment.

Background

Infertility is generally defined as the inability of an organism to reproduce naturally. In humans, it is complex and defined as the failure to conceive after a year of regular and unprotected sexual intercourse [1]. Infertility affects about 48.5 million couples, representing 15% of couples worldwide [2]. Males are responsible for 20–30% of infertility, while females account for 20–35%, and the remaining is shared by both [2, 3]. However, the prevalence of infertility varies worldwide, being highest in South East Asia and West Africa [4, 5].

Infertility causes psychological, economic, and health burdens, resulting in trauma and stress, particularly in societies that emphasize childbearing [6]. In some parts of the world such as Africa and Asia, infertile couples, particularly women, face stigmatization, discrimination, and divorce. A variety of pathologies are suspected in infertility, which includes endocrine dysfunction, genetic abnormalities, infection and diseases, and autoimmune disorders [7, 8]. These pathologies are triggered by environmental factors, including toxic substance exposure as well as lifestyles, such as delayed marriage, nutrition, obesity, stress, smoking, drug use, and alcohol consumption [9]. An in-depth understanding of these mentioned causes is necessary for the prevention and effective treatment of infertility [7]. The genetic causes, in particular, need more attention and understanding because it accounts for 15–30% of male infertility alone [10, 11]. Fortunately, in the last few decades, technological innovations in biological studies have made possible more insightful findings on the genetic etiology of infertility that may lead to better treatment. This review, therefore, provides an update on genetics and pathophysiology of syndromic and nonsyndromic infertility.

Main text

Database searching and search strategy

To identify relevant papers on the topic, academic databases such as PubMed, Google Scholar, Uniport, GeneCards, Genetics Home Reference (GHR), and National Center for Biotechnology Information (NCBI) were searched. Key search words used include ‘infertility’, ‘male infertility’, ‘female infertility’, ‘etiology of infertility’, and ‘causes of infertility’. Others are ‘genetic etiology of infertility’, ‘gene mutations predisposing to infertility’, ‘syndromic and nonsyndromic infertility’, and ‘gene mutations causing infertility’. Each database was searched independently, after which the articles retrieved were pooled together and double citations removed.

Inclusion and exclusion criteria

Articles were included if they are available in the English language, focused on infertility, genetic etiology of infertility, and pathophysiology of infertility. Studies published before the year 2000 were excluded, except sometimes in which the information was vital. This was done to ensure up-to-date information.

A total of 133 articles were identified from all the databases, of which 120 were retained after removing duplicates (Fig. 1). Of the 120 articles retained, 110 passed the relevance test for eligibility. From the eligibility test, 101 articles fit the study objectives and were reviewed and included in this study.

Fig. 1
figure 1

Article selection flow diagram

Genes predisposing to syndromic and nonsyndromic infertility

The searches identified several gene mutations linked with infertility and infertility-related disorders and syndromes. However, it is beyond this study to discuss all the genes. As such, 65 genes frequently encountered in our searches and with sufficient information were included in this study. The genes were classified into genes predisposing to syndromic infertility, genes predisposing to nonsyndromic spermatogenic failure and sperm morphology abnormalities, genes predisposing to nonsyndromic sex reversal and pubertal delay, and genes predisposing to nonsyndromic ovarian failure.

Genes predisposing to syndromic infertility

Twenty-three (23) genes, representing 35% of the total genes collected, were linked with syndromic infertility (Table 1). The most common syndromes associated with infertility identified by this study are polycystic ovary syndrome (PCOS), Swyer syndrome, and Sertoli cell-only syndrome, respectively. Others include the congenital bilateral absence of the vas deferens (CBAVD), Wilm’s tumour, fibroid, Kallmann syndrome, Frasier syndrome, Denys-Drash syndrome, and Bordet-Biedl syndrome. Most of the genes cause female infertility with features such as hypogonadotropic hypogonadism, ovarian failure, sex reversal, gonad underdevelopment, puberty delay, and menstrual disorders. Some genes also predispose to male infertility with phenotypic presentations, including hypogonadotropic hypogonadism, sex reversal, puberty delay or absence, gonad underdevelopment, and spermatogenic failure.

Table 1 Genes predisposing to syndromic infertility

Genes predisposing to nonsyndromic spermatogenic failure and sperm morphology abnormalities

Twenty-six (26) genes, representing 40% of the total genes collected, predispose to nonsyndromic spermatogenic failure and sperm morphology abnormalities (Table 2). Most often, mutations in the genes cause meiotic arrest, resulting in acrosome malformation or absence, ultimately ending in sperm head abnormalities such as azoospermia, globozoospermia, oligospermia, and oligozoospermia. In some cases, the meiotic arrest may result in polyploidy spermatozoa, characterized by an enlarged sperm cell head called macrozoospermia. A meiotic arrest may also decrease sperm motility and hyperactivation needed to push spermatozoa through the uterus. Sometimes, mutations in the genes may cause chromatin damage or DNA fragmentation, disrupting spermatogenesis and causing sperm cell structural defects and loss.

Table 2 Genes predisposing to nonsyndromic spermatogenic failure and sperm morphological abnormalities
Table 3 Genes predisposing to nonsyndromic sex reversal and pubertal delay

Genes predisposing to nonsyndromic sex reversal and pubertal delay

Five (5) of the genes collected, representing 7.69% of the total genes, predispose to sex reversal and puberty delay or absence (Table 3). Most mutations in the genes cause reduced circulating levels of gonadotropins and testosterone, resulting in hypogonadotropic hypogonadism, characterized by the absence or incomplete sexual maturation. Mutations in the genes may also cause complete or partial gonadal dysgenesis, characterized by underdeveloped or presence of both gonads.

Genes predisposing to nonsyndromic ovarian failure

Eleven (11) of the genes collected, representing 16.92% of the total genes, predispose to nonsyndromic ovarian failure (Table 4). Some mutations in the genes may reduce the sensitivity of fully grown immature oocytes to progestin hormone, resulting in a reduced number of oocytes undergoing meiotic maturation. Mutations in the genes may also cause ovarian dysgenesis, characterized by absence or puberty delay, primary amenorrhea, uterine hypoplasia, and hypogonadotropic hypogonadism. Some mutations prevent the formation of primordial follicles, resulting in reduced oocyte numbers after birth.

Table 4 Genes predisposing to nonsyndromic ovarian failure

In summary, 23 genes, representing 35%, were linked with syndromic infertility, while 42 genes, accounting for 65% cause nonsyndromic infertility. Of the 42 nonsyndromic genes, 26 predispose to spermatogenic failure and sperm morphology abnormalities, 11 cause ovarian failures, and 5 cause sex reversal and puberty delay. Overall, 31 genes (48%) predispose to male infertility, 15 genes (23%) cause female infertility, and 19 genes (29%) predispose to both. The common features of male infertility were spermatogenic failure and sperm morphology abnormalities, while ovarian failure has been the most frequently reported among infertile females. This analysis infers that male genetic infertility was more prevalent than female, with spermatogenic failure and sperm morphology abnormalities being most prevalent.

Genetic testing for infertility disorders

Knowing the exact cause of infertility allows for better diagnostic decisions and enables enhanced counseling for parents with regard to risks to their children. For this reason, when there is a means, testing of embryos should be recommended for a family with a history of genetic infertility disorders discussed above. Moreover, every healthy-looking individual is a carrier of between 5 to 8 recessive genetic disorders; so the test should be extended to everyone who has the means [157]. It is specifically recommended for embryos of couples who are recessive for a gene infertility disorder.

The conventional method used in genetic testing of embryos is the whole sequence amplification. After fertilization, the embryo undergoes mitotic divisions for 5 to 7 days, ending with the development of the blastocyst stage. A biopsy of some blastocysts is done, after which a whole genome amplification of the cells is conducted, usually using polymerase chain reaction [157, 158]. This technique is laborious, time-consuming, and expensive, so recently, a new technique known as the next-generation sequencing is being used for testing genetic disorders in infertile couples and embryos [159]. The protocol is based on an enlarged panel of disease-associated genes (approximately 5000 genes). The large panel of marker genes allows the identifications of a large number of target and non-target genes [157]. However, the technique has some limitations too, which is its inability to detect haploidies, polyploidies, and mosaicisms [157].

Conclusion

Several studies reviewed showed that certain genes embedded in the hypothalamus, pituitary gland, gonads, and gonadal outflow regulate fertility in both males and females. However, mutational inactivation of these genes may cause syndromic or nonsyndromic infertility. The common features of male infertility include spermatogenic failure, resulting in azoospermia, oligospermia, and chromosome structural abnormalities. Most females express ovarian failure, resulting in menstrual dysfunction and pregnancy loss. Males and females may also express sex reversal, pubertal delay or absence, and genital abnormalities such as micro-penis and absence of the breast. Male genetic infertility was more prevalent than female, with spermatogenic failure and sperm morphology abnormalities being most prevalent. The mechanisms leading to these pathologies are gene-specific, which, if targeted in the affected, may lead to improved treatment. Medical practitioners are advised to target these genes in the affected.

Availability of data and materials

Not applicable.

Abbreviations

AIS:

Androgen insufficiency syndrome

BBS:

Bordet-Biedl syndrome

CBAVD:

Congenital bilateral absence of the vas deferens

CF:

Cystic fibrosis

FSH:

Follicle-stimulating hormone

FXPOI:

Fragile X-associated primary ovarian insufficiency

GHR:

Genetic home reference

HH:

Hypogonadotropic hypogonadism

LH:

Luteinizing hormone

NCBI:

National Center for Biotechnology Information

OHSS:

Ovarian hyperstimulation syndrome

ODG:

Ovarian dysgenesis

PCOS:

Polycystic ovary syndrome

POF:

Premature ovarian failure

SCOS:

Sertoli cell-only

SNP:

Single nucleotide polymorphism

SPGF:

Spermatogenic failure

References

  1. Venkatesh T, Suresh PS, Tsutsumi R (2014) New insights into the genetic basis of infertility. Appl Clin Genet. 7:235–243. https://doi.org/10.2147/TACG.S40809

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  2. Agarwal A, Mulgund A, Hamada,A, et al. A unique view on male infertility around the globe. Reprod Biol Endocrinol. 2015; 13: 37 https://doi.org/10.1186/s12958-015-0032-1.

  3. Chowdhury SH, Cozma AI, Chowdhury JH. Infertility. Essentials for the Canadian Medical Licensing Exam: review and prep for MCCQE Part I. 2nd edition. Wolters Kluwer. Hong Kong. 2017.

  4. Mascarenhas MN, Flaxman SR, Boerma T et al (2012) National, regional, and global trends in infertility prevalence since 1990: a systematic analysis of 277 health surveys. PLoS Med. 9:e1001356 https://dx.plos.org/10.1371

    Article  Google Scholar 

  5. Odunvbun W, Oziga D, Oyeye L, Ojeogwu C (2018) Pattern of infertility among infertile couple in a secondary health facility in Delta State, South South Nigeria. Trop J Obstet Gynaecol. 35:244–248. https://doi.org/10.4103/TJOG.TJOG_61_18

    Article  Google Scholar 

  6. Kumar N, Singh AK (2015) Trends of male factor infertility, an important cause of infertility: a review of literature. J Hum Reprod Sci. 8:191–196. https://doi.org/10.4103/0974-1208.170370

    Article  PubMed  PubMed Central  Google Scholar 

  7. The ESHRE Capri Workshop Group (2002) Physiopathological determinants of human infertility. Hum Reprod Update. 8(5):435–447

    Article  Google Scholar 

  8. Brugo-Olmedo S, Chillik C, Kopelman S (2001) Definition and causes of infertility. Reprod BioMed Online. 2(1):41–53. https://doi.org/10.1016/s1472-6483(10)62187-6

    Article  PubMed  Google Scholar 

  9. Durairajanayagam D (2018) Lifestyle causes of male infertility. Arab J Urol. 16(1):10–20. https://doi.org/10.1016/j.aju.2017;12:004

    Article  PubMed  PubMed Central  Google Scholar 

  10. Ferlin A, Raicu F, Gatta V et al (2007) Male infertility: role of genetic background. Reprod Biomed Online. 14:734–745. https://doi.org/10.1016/s1472-6483(10)60677-3

    Article  CAS  PubMed  Google Scholar 

  11. O'Flynn O'Brien KL, Varghese AC, Agarwal A (2010) The genetic causes of male factor infertility: a review. Fertil. Steril. 93:1–12. https://doi.org/10.1016/j.fertnstert.2009.10.045

    Article  CAS  PubMed  Google Scholar 

  12. Genetic Home Reference. 2020. CFTR gene. Available at https://ghr.nlm.nih.gov/gene/CFTR. .

  13. Tahmasbpour E, Balasubramanian D, Agarwal A (2014) A multi-faceted approach to understanding male infertility: gene mutations, molecular defects and assisted reproductive techniques (ART) J. Assist Reprod Genet. 31:1115–1137. https://doi.org/10.1007/s10815-014-0280-6

    Article  Google Scholar 

  14. Dada R, Thilagavathi J, Venkatesh S, Esteves SC, Agarwal A (2011) Genetic testing in male infertility. Open Reprod Sci. 3:42–56. https://doi.org/10.2174/1874255601103010042

    Article  CAS  Google Scholar 

  15. Ajonuma LC, Ng EH, Chow PH et al (2005) Increased cystic fibrosis transmembrane conductance regulator (CFTR) expression in the human hydrosalpinx. Hum Reprod. 20(5):1228–1234. https://doi.org/10.1093/humrep/deh773

    Article  CAS  PubMed  Google Scholar 

  16. Genetic Home Reference. 2020. NR5A1 gene. Available at .

  17. Jedidi I, Ouchari M, Yin Q (2018) Autosomal single-gene disorders involved in human infertility. Saudi J Biol Sci. 25(5):881–887. https://doi.org/10.1016/j.sjbs.2017.12.005

    Article  CAS  PubMed  Google Scholar 

  18. Bashamboo A, Ferraz-de-Souza B, Lourenço D et al (2010) Human male infertility associated with mutations in NR5A1 encoding steroidogenic factor 1. Am J Hum Genet. 87:505–512. https://doi.org/10.1016/j.ajhg.2010.09.009

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  19. Fabbri HC, de Andrade JGR, Soardi FC, et al. The novel p.Cys65Tyr mutation in NR5A1 gene in three 46, XY siblings with normal testosterone levels and their mother with primary ovarian insufficiency. BMC Med Genet. 2014; 15:7. DOI: 10.1186/1471-2350-15-7.

  20. Genetic Home Reference. 2020. WT1 gene. Available at https://ghr.nlm.nih.gov/gene/WT1. .

  21. Nathan A, Reinhardt P, Kruspe D et al (2017) The Wilms tumor protein Wt1 contributes to female fertility by regulating oviductal proteostasis. Hum Mol Genet. 26:1694–1705. https://doi.org/10.1093/hmg/ddx075

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  22. Wang XN, Li ZS, Ren Y et al (2013) The Wilms tumor gene, Wt1, is critical for mouse spermatogenesis via regulation of Sertoli cell polarity and is associated with non-obstructive azoospermia in humans. PLoS Genet. 9:e1003645. https://doi.org/10.1371/journal.pgen.1003645

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  23. Sakamoto J, Takata A, Fukuzawa R et al (2001) A novel WT1 gene mutation associated with Wilms’ Tumor and congenital male genitourinary malformation. Pediatr Res. 50:337–344. https://doi.org/10.1203/00006450-200109000-00008

    Article  CAS  PubMed  Google Scholar 

  24. Seabra CM, Quental S, Lima AC et al (2015) The mutational spectrum of WT1 in male infertility. J Urol. 193:1709–1715. https://doi.org/10.1016/j.juro.2014.11.004

    Article  CAS  PubMed  Google Scholar 

  25. Wang Y, Xiao M, Chem X et al (2015) WT1 recruits TET2 to regulate its target gene expression and suppress leukemia cell proliferation. Is. Mol Cell. 57(4):662–673. https://doi.org/10.1016/j.molcel.2014.12.023

    Article  CAS  Google Scholar 

  26. Genetic Home Reference. 2020. FMR1 gene. Available at https://ghr.nlm.nih.gov/gene/FMR1. .

  27. Coffee B, Keith K, Albizua I et al (2009) Incidence of fragile X syndrome by newborn screening for methylated FMR1 DNA. Am J Hum Genet. 85(4):503–514. https://doi.org/10.1016/j.ajhg.2009.09.007

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  28. Genetic Home Reference. 2020. GALT gene. Available at https://ghr.nlm.nih.gov/gene/GALT#conditions. .

  29. Fridovich-Keil JL, Gubbels CS, Spencer JB (2011) Ovarian function in girls and women with GALT-deficiency galactosemia. J Inherit Metab Dis. 34(2):357–366. https://doi.org/10.1007/s10545-010-9221-4

    Article  CAS  PubMed  Google Scholar 

  30. Zorrilla M, Yatsenko AN (2013) The genetics of infertility: current status of the field. CurrGenet Med Rep. 1(4):10. https://doi.org/10.1007/s40142-013-0027-1

    Article  Google Scholar 

  31. National Center for Biotechnology Information. 2020. GDF9 growth differentiation factor 9 [Homo sapiens (human)]. Available at https://www.ncbi.nlm.nih.gov/gene/2661. .

  32. Zhao H, Qin Y, Kovanci E, Simpson JL, Chen ZJ, Rajkovic A (2007) Analyses of GDF9 mutation in 100 Chinese women with premature ovarian failure. Fertil Steril. 88(5):1474–1476. https://doi.org/10.1016/j.fertnstert.2007.01.021

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  33. Uniport .2020. UniProtKB - O60383 (GDF9_HUMAN). Available at https://www.uniprot.org/uniprot/O60383. Accessed March 18, 2020.

  34. Genetic Home Reference. 2020.. MED12 gene. Available at https://ghr.nlm.nih.gov/gene/MED12#conditions. .

  35. Genetic Home Reference. 2020. ANOS1 gene. Available at https://ghr.nlm.nih.gov/gene/ANOS1#location. .

  36. Lopategui DM, Griswold AJ, Arora H, Clavijo RI, Tekin M, Ramasamy R (2018) A rare ANOS1 variant in siblings with Kallmann syndrome identified by whole exome sequencing. Androl. 6(1):53–57. https://doi.org/10.1111/andr.12432

    Article  CAS  Google Scholar 

  37. Genetic Home Reference. 2020. LEP gene. Available at https://ghr.nlm.nih.gov/gene/LEP#location. .

  38. Layman LC (2002) Human gene mutations causing infertility. J Med Genet. 39:153–161. https://doi.org/10.1136/jmg.39.3.153

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  39. Hodžić AM, Ristanović B, Zorn C et al (2017) Genetic variation in leptin and leptin receptor genes as a risk factor for idiopathic male infertility. Androl. 5(1):70–74. https://doi.org/10.1111/andr.12295

    Article  CAS  Google Scholar 

  40. Genetic Home Reference. 2020. LEPR gene. Available at https://ghr.nlm.nih.gov/gene/LEPR#location. .

  41. Genetic Home Reference. 2020. NR0B1 gene. Available at https://ghr.nlm.nih.gov/gene/NR0B1#location. .

  42. Genetic Home Reference. 2020. HESX1 gene. Available at https://ghr.nlm.nih.gov/gene/HESX1#location. .

  43. National Center for Biotechnology Information. 2020. LHB gene. Available at https://ghr.nlm.nih.gov/gene/LHB#location. .

  44. El-Shal SA, Zidan HE, Rashad MN, Abdelaziz AM, Harira MM (2016) Association between genes encoding components of the leutinizing hormone/luteinizing hormone choriogonadotrophin receptor pathway and polycystic ovary syndrome in Egyptian women. Inter Union of Biochem Mol Biol. 68(1):23–36. https://doi.org/10.1002/iub.1457

    Article  CAS  Google Scholar 

  45. Reen JK, Kerekoppa R, Deginal R et al (2018) Luteinizing hormone beta gene polymorphism and its effect on semen quality traits and luteinizing hormone concentrations in Murrah buffalo bulls. Asian-Australas J Anim Sci. 31(8):1119–1126. https://doi.org/10.5713/ajas.17.0679

    Article  CAS  PubMed  Google Scholar 

  46. Genetic Home Reference. 2020. LHCGR gene. Available at https://ghr.nlm.nih.gov/gene/LHCGR. .

  47. Genetic Home Reference. 2020. AR gene. Available at https://ghr.nlm.nih.gov/gene/AR#location. .

  48. Genetic Home Reference. 2020. SRY gene. Available at https://ghr.nlm.nih.gov/gene/SRY#synonyms. .

  49. Lerchbaum B, Obermayer-Pietsch B (2012) Vitamin D and fertility: a systematic review. Eur JEndocrinol. 166:765–778. https://doi.org/10.1530/EJE-11-0984

    Article  CAS  Google Scholar 

  50. Genetic Home Reference. 2020. VDR gene. Available at https://ghr.nlm.nih.gov/gene/VDR#location. .

  51. Reginatto MW, Pizarro BM, Antunes RA, Mancebo ACA, Hoffmann L, Fernandes P. Vitamin D receptor TaqI polymorphism is associated with reduced follicle number in women utilizing assisted reproductive technologies. Front Endocrinol. 2018; 9: 252.| https://doi.org/10.3389/fendo.2018.00252.

  52. Bagheri M, Abdi RI, Hosseini JN, Nanbakhsh F (2013) Vitamin D receptor TaqI gene variant in exon 9 and polycystic ovary syndrome risk. Int J Fertil Steril. 7(2):116–121

    PubMed  PubMed Central  Google Scholar 

  53. Szczepańsk M, Mostowska A, Wirstlein P, Skrzypczak J. Matthew MM, Jagodziński PP. Polymorphic variants in vitamin D signaling pathway genes and the risk of endometriosis-associated infertility. Mol Med Rep. 2015; 12 (5): 7109-7115. https://doi.org/10.3892/mmr.2015.4309.

  54. Sunnotel O, Hiripi L, Lagan K et al (2010) Alterations in the steroid hormone receptor co-chaperone FKBPL are associated with male infertility: a case-control study. Reprod Biol Endocrinol. 8:22. https://doi.org/10.1186/1477-7827-8-22

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  55. Ketefian A, Jones MR, Krauss RM. Association study of androgen signaling pathway genes in polycystic ovary syndrome. Fertil Steril. 2016; 105(2):467-73.e4. DOI: 10.1016/j.fertnstert.2015;09: 043.

  56. Demetriou C, Chanudet E, Joseph A et al (2019) Exome sequencing identifies variants in FKBP4 that are associated with recurrent fetal loss in humans. Hum Mol Genet. 28(20):3466–3474. https://doi.org/10.1093/hmg/ddz203

    Article  CAS  PubMed  Google Scholar 

  57. Ditton HJ, Zimmer J, Kamp C, Rajpert-De ME, Vogt PH (2004) The AZFa gene DBY (DDX3Y) is widely transcribed but the protein is limited to the male germ cells by translation control. Hum Mol Genet. 13(19):2333–2341. https://doi.org/10.1093/hmg/ddh240

    Article  CAS  PubMed  Google Scholar 

  58. Luddi A, Margollicci M, Gambera L et al (2009) Spermatogenesis in a man with complete deletion of USP9Y.N. Engl J Med. 360(9):881–885. https://doi.org/10.1056/NEJMoa0806218

    Article  CAS  Google Scholar 

  59. Uniport. 2020. UniProtKB - O00507 (USP9Y_HUMAN). Available at https://www.uniprot.org/uniprot/O00507.

  60. Habedanck R, Stierhof YD, Wilkinson CJ, Nigg EA (2005) The Polo kinase Plk4 functions in centriole duplication. Nat Cell Biol. 7:1140–1146. https://doi.org/10.1038/ncb1320

    Article  CAS  PubMed  Google Scholar 

  61. GeneCards. 2020. PLK4 Gene. Available at https://www.genecards.org/cgi-bin/carddisp.pl?gene=PLK4. .

  62. Harris RM, Weiss J, Jameson JL (2011) Male hypogonadism and germ cell loss caused by a mutation in Polo-like kinase 4. Endocrinol. 152:3975–3985. https://doi.org/10.1210/en.2011-1106

    Article  CAS  Google Scholar 

  63. Miyamoto T, Minase G, Shin T, Ueda H, Okada H, Sengoku K (2017) Human male infertility and its genetic causes. Reprod Med Biol. 16(2):81–88. https://doi.org/10.1002/rmb2.12017

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  64. Veleri S, Bishop K, Dalle Nogare DE et al (2012) Knockdown of Bardet-Biedl syndrome gene BBS9/PTHB1 leads to cilia defects. PLoS ONE. 7(3):e34389. https://doi.org/10.1371/journal.pone.0034389

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  65. HyunJun K, Seung KL, Min-Ho K et al (2008) Parathyroid hormone-responsive B1 gene is associated with premature ovarian failure. Hum Reprod. 23(6):1457–1465. https://doi.org/10.1093/humrep/den086

    Article  CAS  Google Scholar 

  66. Genetic Home Reference. 2020. FSHR gene. Available at https://ghr.nlm.nih.gov/gene/FSHR#location. .

  67. Aittomäki K, Lucena JD, Pakarinen P et al (1995) Mutation in the follicle-stimulating hormone receptor gene causes hereditary hypergonadotropic ovarian failure. Cell. 82(6):959–968 https://doi.org/10.1016/0092-8674(95)90275-9

    Article  Google Scholar 

  68. Uniport. 2020. UniProtKB - P23945 (FSHR_HUMAN). Available at https://www.uniprot.org/uniprot/P23945. .

  69. Miyamoto T, Tsujimura A, Miyagawa Y, Koh E, Namiki SK. Male infertility and its causes in human. Adv Urol. 2012; Article ID 384520. DOI: 10.1155/2012/384520.

  70. Uniport. 2020. UniProtKB - Q9BXB7 (SPT16_HUMAN). Available at https://www.uniprot.org/uniprot/Q9BXB7. Accessed 23 march, 2020.

  71. Dam AH, Koscinski I, Kremer JA et al (2007) Homozygous mutation in SPATA16 is associated with male infertility in human globozoospermia. Am J Hum Genet. 81(4):813–820. https://doi.org/10.1086/521314

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  72. Genetic Home Reference. 2020. AURKC gene. Available at https://ghr.nlm.nih.gov/gene/AURKC. .

  73. Genetic Home Reference. 2020. CATSPER1 gene. Available at https://ghr.nlm.nih.gov/gene/CATSPER1#location. .

  74. Avenarius MR, Hildebrand MS, Zhang Y et al (2009) Human male infertility caused by mutations in the CATSPER1 channel protein. Am J Hum Gen. 84(4):505–510 https://doi.org/10.1016/j.ajhg.2009.03.004

    Article  CAS  Google Scholar 

  75. Nuti F, Krausz C (2008) Gene polymorphisms/mutations relevant to abnormal spermatogenesis. Reprod Biomed Online. 16:504–513. https://doi.org/10.1016/s1472-6483(10)60457-9

    Article  CAS  PubMed  Google Scholar 

  76. Genetic Home Reference. 2020. MTHFR gene. Available at https://ghr.nlm.nih.gov/gene/MTHFR#normalfunction. Accessed March, 2020.

  77. Friedman G, Goldschmidt N, Friedlander Y et al (1999) A common mutation A1298C in human methylenetetrahydrofolate reductase gene: association with plasma total homocysteine and folate concentrations. J Nutr. 129:1656–1661. https://doi.org/10.1093/jn/129.9.1656

    Article  CAS  PubMed  Google Scholar 

  78. Marques CJ, Costa P, Vaz B et al (2008) Abnormal methylation of imprinted genes in human sperm is associated with oligozoospermia. Mol Hum Reprod. 14:67–74. https://doi.org/10.1093/molehr/gam093

    Article  CAS  PubMed  Google Scholar 

  79. National Center for Biotechnology Information. 2020. SYCP3 synaptonemal complex protein 3 [Homo sapiens (human)]. Available at https://www.ncbi.nlm.nih.gov/gene/50511. .

  80. Uniport. 2020. UniProtKB - Q8IZU3 (SYCP3_HUMAN). Available at https://www.uniprot.org/uniprot/Q8IZU3. .

  81. GeneCards. 2020. HSF2 Gene. Available at https://www.genecards.org/cgi-bin/carddisp.pl?gene=HSF2. .

  82. Mou L, Wang Y, Li H et al (2013) A dominant-negative mutation of HSF2 associated with idiopathic azoospermia. Hum Genet. 132(2):159–165

    Article  CAS  Google Scholar 

  83. Wang G, Ying Z, Jin X et al (2004) Essential requirement for both hsf1 and hsf2 transcriptional activity in spermatogenesis and male fertility. Genesis. 38(2):66–80. https://doi.org/10.1002/gene.20005

    Article  CAS  PubMed  Google Scholar 

  84. GeneCards. 2020. SYCP2 Gene. Available at https://www.genecards.org/cgi-bin/carddisp.pl?gene=SYCP2. .

  85. Schilit SLP, Menon S, Friedrich C et al (2020) SYCP2 translocation-mediated dysregulation and frameshift variants cause human male infertility. Am J Hum Genet. 6(1):41–57. https://doi.org/10.1016/j.ajhg.2019.11.013

    Article  CAS  Google Scholar 

  86. Takemoto K, Imai Y, Saito K et al (2020) Sycp2 is essential for synaptonemal complex assembly, early meiotic recombination and homologous pairing in zebrafish spermatocytes. PLoS Genet. 16(2):e1008640. https://doi.org/10.1371/journal.pgen.1008640

  87. Bolcun-Filas E, Bannister LA, Barash A et al (2011) A-MYB (MYBL1) transcription factor is a master regulator of male meiosis. Develop. 138:3319–3330. https://doi.org/10.1242/dev.067645

    Article  CAS  Google Scholar 

  88. Yang F, Silber S, Leu NA. TEX11 is mutated in infertile men with azoospermia and regulates genome-wide recombination rates in mouse. EMBO Mol Med. 2015; 7(9):1198–1210. doi:10.15252/emmm.201404967.

  89. Uniport. 2020. UniProtKB - Q8IYF3 (TEX11_HUMAN). Available at https://www.uniprot.org/uniprot/Q8IYF3. .

  90. Genetic Home Reference. 2020. KIT gene. Available at https://ghr.nlm.nih.gov/gene/KIT#conditions. .

  91. Lars R, Johan L (2016) KIT (v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene homolog). Atlas Genet Cytogenet Oncol Haematol. 20(8):441–444 http://atlasgeneticsoncology.org/Genes/KITID127.html

    Google Scholar 

  92. Uniport. 2020. UniProtKB - Q8IZP9 (AGRG2_HUMAN). Available at https://www.uniprot.org/uniprot/Q8IZP9. .

  93. Patat O, Pagin A, Siegfried A et al (2016) Truncating mutations in the adhesion G protein-coupled receptor G2 gene ADGRG2 cause an X-linked congenital bilateral absence of vas deferens. Am J Hum Genet. 99(2):437–442. https://doi.org/10.1016/j.ajhg.2016.06.012

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  94. National Center for Biotechnology Information. 2020. FKBP6 FKBP prolyl isomerase 6 [Homo sapiens (human)]. Available at https://www.ncbi.nlm.nih.gov/gene/8468. .

  95. Crackower MA, Kolas NK, Noguchi J (2003) Essential role of Fkbp6 in male fertility and homologous chromosome pairing in meiosis. Science. 300(5623):1291–1295. https://doi.org/10.1126/science.1083022

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  96. Uniport. 2020. UniProtKB - O75344 (FKBP6_HUMAN). Available at https://www.uniprot.org/uniprot/O75344. .

  97. Akmal M, Aulanni’am A, Widodo MA, Sumitro SB, Purnomo BB (2016) The important role of protamine in spermatogenesis and quality of sperm: a mini review. Asian Pac J Reprod. 5:357–360. https://doi.org/10.1016/j.apjr.2016.07.013

  98. Ravel C, Chantot-Bastaraud S, El Houate B et al (2007) Mutations in the protamine 1 gene associated with male infertility. Mol Hum Reprod. 13(7):461–464. https://doi.org/10.1093/molehr/gam031

    Article  CAS  PubMed  Google Scholar 

  99. Jiang W, Sun H, Zhang J (2005) Polymorphisms in protamine 1 and protamine 2 predict the risk of male infertility: a meta-analysis. Sci Rep. 5:15300. https://doi.org/10.1038/srep15300

    Article  CAS  Google Scholar 

  100. Siasi E, Aleyasin A, Mowla J, Sahebkasha H (2012) Association study of six SNPs in PRM1, PRM2 and TNP2 genes in iranian infertile men with idiopathic azoospermia. Iran J Reprod Med. 10:329–336

    CAS  PubMed  PubMed Central  Google Scholar 

  101. Miyagawa Y, Nishimura H, Tsujimura A et al (2005) Single-nucleotide polymorphisms and mutation analyses of the TNP1 and TNP2 genes of fertile and infertile human male. J Androl. 26(6):779–786. https://doi.org/10.2164/jandrol.05069

    Article  CAS  PubMed  Google Scholar 

  102. Heidari MM, Khatami M, Talebi AR, Moezzi F. Mutation analysis of TNP1 gene in infertile men with varicocele. Iran J Reprod Med. 2014; 12(4):257-62. .

  103. Adham IM, Nayernia K, Burkhardt-Göttges E et al (2001) Teratozoospermia in mice lacking the transition protein 2 (Tnp2). Mol Hum Reprod. 7(6):513–520. https://doi.org/10.1093/molehr/7.6.513

    Article  CAS  PubMed  Google Scholar 

  104. Uniport. 2020. UniProtKB - Q9NQZ3 (DAZ1_HUMAN). Available at https://www.uniprot.org/uniprot/Q9NQZ3. .

  105. Fernandes K, Huellen J, Goncalves H et al (2002) High frequency of DAZ1/DAZ2 gene deletions in patients with severeoligozoospermia. Mol Hum Reprod. 8(3):286–298. https://doi.org/10.1093/molehr/8.3.286

  106. Genetic Home Reference. 2020. DAZI gene. Available at https://ghr.nlm.nih.gov/gene/DAZ1. .

  107. Deans B, Griffin CS, Maconochie M, Thacker J (2000) Xrcc2 is required for genetic stability, embryonic neurogenesis and viability in mice. EMBO J. 19(24):6675–6685. https://doi.org/10.1093/emboj/19.24.6675

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  108. Yang Y, Guo J, Dai L (2018) XRCC2 mutation causes meiotic arrest, azoospermia and infertility. J Med Genet. 55:628–636. https://doi.org/10.1136/jmedgenet-2017-105145

    Article  CAS  Google Scholar 

  109. GeneCards. 2020. CCDC62 Gene. Available at https://www.genecards.org/cgi-bin/carddisp.pl?gene=CCDC62. .

  110. Li Y, Li C, Lin S et al (2017) A nonsense mutation in Ccdc62 gene is responsible for spermiogenesis defects and male infertility in repro29/repro29 mice. Biol Reprod. 96(3):587–597 https://doi.org/10.1095/biolreprod.116.141408

    Article  Google Scholar 

  111. Hwang JY, Mannowetz N, Zhang Y. EFCAB9 is a pH-Dependent Ca2+ sensor that regulates CatSper channel activity and sperm motility. BioRxiv. 2018; Article no 459487. doi: https://doi.org/10.1101/459487.

  112. Yatsenko AN, Roy A, Chen R (2006) Non-invasive genetic diagnosis of male infertility using spermatozoal RNA: KLHL10 mutations in oligozoospermic patients impair homodimerization. Hum Mol Genet. 15:3411–3419. https://doi.org/10.1093/hmg/ddl417

    Article  CAS  PubMed  Google Scholar 

  113. Kuo YC, Lin YH, Chen HI et al (2012) SEPT12 mutations cause male infertility with defective sperm annulus. Hum Mutat. 33:710–719. https://doi.org/10.1002/humu.22028

    Article  CAS  PubMed  Google Scholar 

  114. Uniport. 2020. UniProtKB - Q92750 (TAF4B_HUMAN). Available at https://www.uniprot.org/uniprot/Q92750. .

  115. Ayhan Ö, Balkan M, Guven A et al (2014) Truncating mutations in TAF4B and ZMYND15 causing recessive azoospermia. J Med Genet. 51:239–244. https://doi.org/10.1136/jmedgenet-2013-102102

    Article  CAS  PubMed  Google Scholar 

  116. Yan W, Si Y, Slaymaker S et al (2010) Zmynd15 encodes a histone deacetylase-dependent transcriptional repressor essential for spermiogenesis and male fertility. J Biol Chem. 285:31418–31426. https://doi.org/10.1074/jbc.M110.116418

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  117. Uniport. 2020. UniProtKB - Q9H091 (ZMY15_HUMAN). Available at https://www.uniprot.org/uniprot/Q9H091. .

  118. National Center for Biotechnology Information. 2020. NANOS1 nanos C2HC-type zinc finger 1 [Homo sapiens (human)]. Available at https://www.ncbi.nlm.nih.gov/gene/340719. .

  119. Kusz-Zamelczyk K, Sajek M, Spik A (2013) Mutations of NANOS1, a human homologue of the Drosophila morphogen, are associated with a lack of germ cells in testes or severe oligo-astheno-teratozoospermia. J Med Genet. 50:187–193. https://doi.org/10.1136/jmedgenet-2012-101230

    Article  CAS  PubMed  Google Scholar 

  120. Uniport. 2020. UniProtKB - Q8WY41 (NANO1_HUMAN). Available at https://www.uniprot.org/uniprot/Q8WY41. .

  121. Uniport. 2020. UniProtKB - Q7Z4T8 (GLTL5_HUMAN). Available at https://www.uniprot.org/uniprot/Q7Z4T8. .

  122. Takasaki N, Tachibana K, Ogasawara S (2014) A heterozygous mutation of GALNTL5 affects male infertility with impairment of sperm motility. Proc Natl Acad Sci USA. 111:1120–1125. https://doi.org/10.1073/pnas.1310777111

    Article  CAS  PubMed  Google Scholar 

  123. National Center for Biotechnology Information. 2020. GNRHR gonadotropin releasing hormone receptor [Homo sapiens (human)]. Available at https://www.ncbi.nlm.nih.gov/gene/2798. .

  124. Zernov N, Skoblov M, Baranova A, Boyarsky K (2016) Mutations in gonadotropin-releasing hormone signaling pathway in two nIHH patients with successful pregnancy outcomes. Reprod Biol Endocrinol. 14:48. https://doi.org/10.1186/s12958-016-0183-8

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  125. Uniport. 2020. UniProtKB - P30968 (GNRHR_HUMAN). Available at https://www.uniprot.org/uniprot/P30968. .

  126. Genetic Home Reference. 2020. PROP1 gene. Available at https://ghr.nlm.nih.gov/gene/PROP1#location. .

  127. Uniport (2020) UniProtKB - Q9Y5R6 (DMRT1_HUMAN). Available at https://www.uniprot.org/uniprot/Q9Y5R6.Accessed (March 25, 2020)

  128. Uniport. 2020. UniProtKB - P41225 (SOX3_HUMAN). Available at https://www.uniprot.org/uniprot/P41225. .

  129. Uniport. 2020. UniProtKB - Q2MKA7 (RSPO1_HUMAN). Available at https://www.uniprot.org/uniprot/Q2MKA7. .

  130. Tomaselli S, Megiorni F, De Bernardo C et al (2007) Syndromic true hermaphroditism due to an R-spondin1 (RSPO1) homozygous mutation. Human Mutat. 29(2):220–226. https://doi.org/10.1002/humu.20665

  131. National Center for Biotechnology Information. 2020. BMP15 bone morphogenetic protein 15 [Homo sapiens (human)]. Available at https://www.ncbi.nlm.nih.gov/gene/9210. .

  132. Uniport. 2020. UniProtKB - O95972 (BMP15_HUMAN). Available at https://www.uniprot.org/uniprot/O95972. .

  133. National Center for Biotechnology Information. 2020. FIGLA folliculogenesis specific bHLH transcription factor [Homo sapiens (human)]. Available at https://www.ncbi.nlm.nih.gov/gene/344018. .

  134. Zhao H, Chen ZJ, Qin Y et al (2008) Transcription factor FIGLA is mutated in patients with premature ovarian failure. Am J Hum Genet. 82(6):1342–1348. https://doi.org/10.1016/j.ajhg.2008.04.018

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  135. Soyal SM, Amleh A, Dean J (2000) FIGalpha. A germ cell-specific transcription factor required for ovarian follicle formation. Develop. 127(21):4645–4654

    CAS  Google Scholar 

  136. Uniport. 2020. UniProtKB - Q6QHK4 (FIGLA_HUMAN). Available at https://www.uniprot.org/uniprot/Q6QHK4. .

  137. Rajkovic A, Pangas SA, Ballow D, Suzumori N, Matzuk MM (2004) NOBOX deficiency disrupts early folliculogenesis and oocyte-specific gene expression. Science. 305(5687):1157–1159. https://doi.org/10.1126/science.1099755

    Article  CAS  PubMed  Google Scholar 

  138. Bouilly J, Bachelot A, Broutin I, Touraine P, Binart N (2011) Novel NOBOX loss-of-function mutations account for 6.2% of cases in a large primary ovarian insufficiency cohort. Hum Mutat. 32(10):1108–1113. https://doi.org/10.1002/humu.21543

    Article  CAS  PubMed  Google Scholar 

  139. Qin Y, Choi Y, Zhao H, Simpson JL, Chen ZJ, Rajkovic A (2007) NOBOX homeobox mutation causes premature ovarian failure. Am J Hum Genet. 81(3):576–581. https://doi.org/10.1086/519496

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  140. Tahara N, Kawakami H, Zhang T et al (2018) Temporal changes of Sall4 lineage contribution in developing embryos and the contribution of Sall4-lineages to postnatal germ cells in mice. Sci Rep. 8:16410 https://doi.org/10.1038/s41598-018-34745-5

    Article  Google Scholar 

  141. Wang B, Li L, Ni F (2009) Mutational analysis of SAL-Like 4 (SALL4) in Han Chinese women with premature ovarian failure. Mol Hum Reprod. 15(9):557–562. https://doi.org/10.1093/molehr/gap046

    Article  CAS  PubMed  Google Scholar 

  142. GeneCards. 2020. FSHB Gene. Available at https://www.genecards.org/cgi-bin/carddisp.pl?gene=FSHB#summaries. .

  143. Layman LC, Lee EJ, Peak DB (1997) Delayed puberty and hypogonadism caused by a mutation in the follicle stimulating hormone β-subunit gene. N Engl J Med. 337:607–611

    Article  CAS  Google Scholar 

  144. Rull1 K, Laan M. Expression of β-subunit of human chorionic gonadotropin genes during the normal and failed pregnancy. Hum Reprod. 2005; 20(12): 3360–3368. doi: https://doi.org/10.1093/humrep/dei261.

  145. Nagirnaja L, Venclovas C, Rull K et al (2012) Structural and functional analysis of rare missense mutations in human chorionic gonadotrophin β-subunit. Mol Hum Reprod. 18(8):379–390. https://doi.org/10.1093/molehr/gas018

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  146. Poikkeus P, Hiilesmaa V, Tiitinen A (2002) Serum HCG 12 days after embryo transfer in predicting pregnancy outcome. Hum Reprod. 17:1901–1905. https://doi.org/10.1093/humrep/17.7.1901

    Article  CAS  PubMed  Google Scholar 

  147. ational Center for Biotechnology Information. 2020. SOHLH1 spermatogenesis and oogenesis specific basic helix-loop-helix 1 [Homo sapiens (human)]. Available at https://www.ncbi.nlm.nih.gov/gene/402381. .

  148. Uniport. 2020. UniProtKB - Q5JUK2 (SOLH1_HUMAN). Available at https://www.uniprot.org/uniprot/Q5JUK2. .

  149. Toyoda S, Yoshimura T, Mizuta J, J-i M (2014) Auto-regulation of the Sohlh1 gene by the SOHLH2/SOHLH1/SP1 complex: implications for early spermatogenesis and oogenesis. PLoS ONE. 9(7):e101681. https://doi.org/10.1371/journal.pone.0101681

  150. Shin YH, Ren Y, Suzuki H et al (2017) Transcription factors SOHLH1 and SOHLH2 coordinate oocyte differentiation without affecting meiosis I. J Clin Invest. 127(6):2106–2211. https://doi.org/10.1172/JCI90281

    Article  PubMed  PubMed Central  Google Scholar 

  151. Qin Y, Jiao X, Dalgleish R et al (2014) Novel variants in the SOHLH2 gene are implicated in human premature ovarian failure. Fertil Steril. 101(4):1104–1109. https://doi.org/10.1016/j.fertnstert.2014.01.001

    Article  CAS  PubMed  Google Scholar 

  152. Song B, Zhang Y, He XJ et al (2015) Association of genetic variants in SOHLH1 and SOHLH2 with non-obstructive azoospermia risk in the Chinese population. Eur J Obstet Gynecol Reprod Biol. 184:48–52. https://doi.org/10.1016/j.ejogrb.2014.11.003

    Article  CAS  PubMed  Google Scholar 

  153. Hao J, Yamamoto M, Richardson TE et al (2008) Sohlh2 knockout mice are male-sterile because of degeneration of differentiating type A spermatogonia. Stem Cells 26(6):1587–1597

    Article  CAS  Google Scholar 

  154. Wu X, Thomas P, Yong ZY (2018) Pgrmc1 Knockout impairs oocyte maturation in zebrafish. Front.Endocrinol. 9:560. https://doi.org/10.3389/fendo.2018.00560

    Article  Google Scholar 

  155. Paskulin DD, Cunha-Filho JS, Paskulin LD, Souza CAB, Ashton-Prolla P (2013) ESR1 rs9340799 is associated with endometriosis-related infertility and in vitro fertilization failure. Disease Markers. 35(6):907–913. https://doi.org/10.1155/2013/796290

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  156. Manosalva I, González A, Kageyama R (2013) Hes1 in the somatic cells of the murine ovary is necessary for oocyte survival and maturation. Develop Biol. 375(2):140–151. https://doi.org/10.1016/j.ydbio.2012.12.015

    Article  CAS  PubMed  Google Scholar 

  157. Cariati F, D’Argenio V, Tomaiuolo R (2019) The evolving role of genetic tests in reproductive medicine. J Transl Med. 17:267. https://doi.org/10.1186/s12967-019-2019-8

    Article  PubMed  PubMed Central  Google Scholar 

  158. Devine K, Roth L. 2020. Genetic testing of embryos. Shady grove fertility. Available at https://www.shadygrovefertility.com/treatments-success/advanced-treatments/genetic-testing-embryos.

    Google Scholar 

  159. Treff NR, Fedick A, Tao X, Devkota B, Taylor D, Scott RT (2013) Evaluation of targeted next-generation sequencing-based preimplantation genetic diagnosis of monogenic disease. Fertil Steril. 99:1377–1384. https://doi.org/10.1016/j.fertnstert.2012.12.018

    Article  CAS  PubMed  Google Scholar 

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Yahaya, T.O., Liman, U.U., Abdullahi, H. et al. Genes predisposing to syndromic and nonsyndromic infertility: a narrative review. Egypt J Med Hum Genet 21, 46 (2020). https://doi.org/10.1186/s43042-020-00088-y

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