Gota Vikram, Patial Pankaj
Department of Clinical Pharmacology, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India.
J Cancer Res Ther. 2011 Jan-Mar;7(1):35-9. doi: 10.4103/0973-1482.80455.
Administering drugs outside the terms of their official labeling is called off-label use. In the West, oncologists often use drugs off-label, which offers several advantages especially while treating patients with multiple comorbidities or advanced cancer. The practice of off-label prescribing of anticancer agents in India is not well documented.
A survey on prescribing practices of 10 important drugs used in cancer was conducted in March 2010. Ten centers representing all parts of India were identified. One oncologist from each center was contacted by phone or email and explained about the survey. The list of drugs was sent to them by email if they agreed to participate and they were requested to fill all the indications for which these drugs were used in their center. Labeling for each drug was obtained from the Food and Drug Administration (FDA) website. Off-label practice was categorized as those recommended by the National Comprehensive Cancer Network (NCCN) and those without.
Nine out of 10 centers agreed to participate in the survey. Four centers responded to the questionnaire. Six out of 10 drugs were used for off-label indications, cisplatin being the most commonly used. All drugs were either used as per FDA labeling or according to the recommendations of NCCN, except for gemcitabine which was used in one center for some indications based on phase II data.
Very limited off-label prescribing was found in oncology practice in India. Since off-label use offers several advantages, judicious use of this practice should be encouraged among the oncologists.
在药品官方标签规定范围之外使用药物被称为药品的非标签使用。在西方,肿瘤学家经常进行药品的非标签使用,这有诸多益处,尤其是在治疗患有多种合并症或晚期癌症的患者时。在印度,抗癌药物的非标签处方行为尚无充分记录。
2010年3月针对10种重要抗癌药物的处方行为开展了一项调查。确定了代表印度各地的10个中心。通过电话或电子邮件联系了每个中心的一名肿瘤学家,并向其解释了该调查。若他们同意参与,会通过电子邮件向他们发送药物清单,并要求他们填写这些药物在其中心使用的所有适应症。每种药物的标签均从美国食品药品监督管理局(FDA)网站获取。非标签使用行为被分类为美国国立综合癌症网络(NCCN)推荐的和未被推荐的。
10个中心中有9个同意参与调查。4个中心回复了问卷。10种药物中有6种用于非标签适应症,顺铂是最常用的。除吉西他滨在一个中心基于II期数据用于某些适应症外,所有药物均按照FDA标签或NCCN的建议使用。
在印度的肿瘤学实践中发现非标签处方行为非常有限。鉴于非标签使用有诸多优点,应鼓励肿瘤学家明智地采用这种做法。