FDAers Look at Oncology Drug Clinical Holds

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Six CDER staff members say that in the Center’s Office of Hematology and Oncology Products, less than 10% of INDs went on hold or were withdrawn within the 30-day safety review period. In an article to be published in Regulatory Toxicology and Pharmacology, the researchers report that of the INDs that were placed on hold, deficiencies were mainly clinical, followed by concerns related to pharmaceutical quality and nonclinical development.

The research was conducted to quantify the most common reasons that INDs for oncology indications go on clinical hold.

In the study, INDs were also characterized based on phase of development, product type, sponsors’ regulatory experience, and occurrence of a pre-IND meeting. The study showed that INDs that were placed on hold were mostly for first-in-human trials or were submitted by sponsors with limited regulatory experience. INDs that went on hold or were safe-to-proceed had pre-IND meetings with comparable rates, but sponsors with substantial experience appeared to benefit more from pre-IND meetings to those with limited experience.

The time interval between the pre-IND meeting and the IND submission was longer for INDs that went on hold, the article says. The researchers say that to obtain useful FDA feedback on product development, it is essential to provide focused questions and supporting information in pre-IND meeting packages.

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