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Thrombocytopenia in pediatric patients on concurrent cannabidiol and valproic acid
Epilepsia ( IF 5.6 ) Pub Date : 2020-07-02 , DOI: 10.1111/epi.16596
Nancy A McNamara 1 , Louis T Dang 1 , Julie Sturza 2 , Julie M Ziobro 1 , Erin M Fedak Romanowski 1 , Garnett C Smith 1 , Sucheta M Joshi 1 , Steven M Leber 1 , Martha Carlson 1 , Patricia Robertson 1 , Renée A Shellhaas 1
Affiliation  

In January 2019, a new plant‐derived purified cannabidiol preparation, approved by the US Food and Drug Administration, became commercially available for patients ≥2 years old with Lennox‐Gastaut syndrome or Dravet syndrome. Among our patients who were prescribed the new cannabidiol formulation, we observed several cases of thrombocytopenia and therefore embarked on this study. We conducted a single‐center systematic chart review of all pediatric patients (<21 years old) who were prescribed cannabidiol from January to August 2019. We evaluated salient features of the patients’ epilepsy syndrome, age, concurrent medications, and surveillance laboratory results before and after cannabidiol initiation. Among 87 patients, nine (10%) developed thrombocytopenia (platelet nadir range = 17 000‐108 000) following initiation of cannabidiol. Each of these nine children was on combination therapy of cannabidiol with valproic acid. Whereas no children on cannabidiol without valproic acid (0/57) developed thrombocytopenia, nine of 23 treated with combination valproic acid and cannabidiol developed platelets < 110 000/µL (P < .0001). We report a novel and clinically important side effect of thrombocytopenia in one‐third of patients treated concurrently with cannabidiol and valproic acid. If this finding is confirmed, clinicians should perform close monitoring for thrombocytopenia when adding cannabidiol to a regimen that includes valproic acid.

中文翻译:

同时服用大麻二酚和丙戊酸的儿科患者的血小板减少症

2019 年 1 月,一种新的植物来源的纯化大麻二酚制剂获得美国食品和药物管理局的批准,可用于 2 岁以上 Lennox-Gastaut 综合征或 Dravet 综合征患者。在我们开具新大麻二酚制剂处方的患者中,我们观察到了几例血小板减少症,因此开始了这项研究。我们对 2019 年 1 月至 8 月期间使用大麻二酚的所有儿科患者(<21 岁)进行了单中心系统图表审查。我们评估了患者癫痫综合征的显着特征、年龄、同时用药和监测实验室结果和大麻二酚开始后。在 87 名患者中,9 名 (10%) 在开始使用大麻二酚后出现血小板减少症(血小板最低值范围 = 17 000-108 000)。这九名儿童中的每一个都接受了大麻二酚和丙戊酸的联合治疗。服用不含丙戊酸的大麻二酚的儿童中没有发生血小板减少症 (0/57),而接受丙戊酸和大麻二酚联合治疗的 23 名儿童中有 9 名出现血小板 < 110 000/µL (P < .0001)。我们报告了三分之一同时使用大麻二酚和丙戊酸治疗的患者出现血小板减少症的新的且具有临床意义的副作用。如果这一发现得到证实,临床医生在向包含丙戊酸的方案中加入大麻二酚时应密切监测血小板减少症。用丙戊酸和大麻二酚联合治疗的 23 人中有 9 人血小板< 110 000/µL (P < .0001)。我们报告了三分之一同时使用大麻二酚和丙戊酸治疗的患者出现血小板减少症的新的且具有临床意义的副作用。如果这一发现得到证实,临床医生在向包含丙戊酸的方案中加入大麻二酚时应密切监测血小板减少症。用丙戊酸和大麻二酚联合治疗的 23 人中有 9 人血小板< 110 000/µL (P < .0001)。我们报告了三分之一同时使用大麻二酚和丙戊酸治疗的患者出现血小板减少症的新的且具有临床意义的副作用。如果这一发现得到证实,临床医生在向包含丙戊酸的方案中加入大麻二酚时应密切监测血小板减少症。
更新日期:2020-07-02
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