Adam Feuerstein is a senior writer and biotech columnist, reporting on the crossroads of drug development, business, Wall Street, and biotechnology. He is also a co-host of the weekly biotech podcast The Readout Loud and author of the newsletter Adam’s Biotech Scorecard. You can reach Adam on Signal at stataf.54.

This story first appeared in Adam’s Biotech Scorecard, a subscriber-only newsletter. STAT+ subscribers can sign up here to get it delivered to their inbox.

Northwest Biotherapeutics, a public biotech company developing a treatment for brain cancer, submitted a marketing application to U.K. regulators in late December 2023. The review was supposed to take 150 days, under an expedited regulatory pathway for drugs that address serious unmet medical needs.

As you’re reading this newsletter, two years, six months, and 18 days have elapsed without an approval decision. Why the extra-long delay? Regulators at the U.K’s Medicines and Healthcare products Regulatory Agency, or MHRA, won’t comment, telling anyone who inquires, including me, that it’s up to Northwest Bio to provide an update on its brain cancer treatment, called DCVax.