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一项关于泛 class I PI3K 抑制剂 buparlisib 联合 cetuximab 治疗复发性或转移性头颈部癌患者的初步研究。

A pilot study of the pan-class I PI3K inhibitor buparlisib in combination with cetuximab in patients with recurrent or metastatic head and neck cancer.

机构信息

Oakland University William Beaumont School of Medicine, Rochester, Michigan.

Department of Medicine, The University of Chicago Medicine, Chicago, Illinois.

出版信息

Head Neck. 2019 Nov;41(11):3842-3849. doi: 10.1002/hed.25910. Epub 2019 Sep 4.

Abstract

BACKGROUND

This study assessed the maximum tolerated dose (MTD) of the PI3K inhibitor buparlisib given concurrently with cetuximab in recurrent and metastatic (R/M) head and neck squamous cell carcinoma (HNSCC).

METHODS

Twelve patients with R/M HNSCC were enrolled. Patients were given oral buparlisib starting day 7 and daily thereafter. The dose of buparlisib was escalated in a 3 + 3 design followed by a dose expansion cohort of 6 patients. The MTD of buparlisib per protocol was 100 mg daily with cetuximab given intravenously every 14 days starting day 0.

RESULTS

Ten patients had ≥2 previous treatment regimens (11 with prior cetuximab). There were no dose limiting toxicities observed during dose escalation. One patient achieved a partial response and 4 achieved stable disease.

CONCLUSION

Based on this pilot study, buparlisib at 100 mg daily plus cetuximab proved to be well-tolerated. Patients previously treated with cetuximab monotherapy showed benefit from this combination.

摘要

背景

本研究评估了在复发性和转移性(R/M)头颈部鳞状细胞癌(HNSCC)患者中,与西妥昔单抗联合应用时,PI3K 抑制剂 Buparlisib 的最大耐受剂量(MTD)。

方法

共纳入 12 例 R/M HNSCC 患者。患者从第 7 天开始口服 Buparlisib,每天一次。Buparlisib 剂量采用 3+3 设计递增,随后进行了 6 例患者的扩展队列研究。方案规定的 Buparlisib 的 MTD 为每日 100mg,西妥昔单抗于第 0 天开始每 14 天静脉滴注一次。

结果

10 例患者有≥2 种既往治疗方案(11 例有既往西妥昔单抗治疗)。在剂量递增期间未观察到剂量限制毒性。1 例患者部分缓解,4 例患者疾病稳定。

结论

基于这项初步研究,每日 100mg 的 Buparlisib 联合西妥昔单抗显示出良好的耐受性。既往接受西妥昔单抗单药治疗的患者从该联合治疗中获益。

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