
Incyte secures second FDA approval for bile duct cancer drug in mutated cancer type
Incyte nabbed its second approval from federal regulators for cancer drug pemigatinib, branded as Pemazyre — as the potential for even more indications await.
The company, headed by CEO Hervé Hoppenot, put out word before the market opened on Friday that the FDA approved Pemazyre under priority review for relapsed or refractory myeloid/lymphoid neoplasms (MLNs) with FGFR1 rearrangement. The drug, an FGFR1/2/3 inhibitor, was originally approved back in 2020 for cholangiocarcinoma, also known as bile duct cancer.
Incyte VP of oncology drug development Peter Langmuir told Endpoints News that the drug had been in the clinic around seven years, starting with clinical trials in 2015. In studying cholangiocarcinoma, Incyte found a subset of patients who had mutations in the FGFR2 gene, which Pemazyre targeted and helping secure its eventual approval in the indication.
“And while we were pursuing the cholangiocarcinoma indication, we realized that there was a subset of patients with hematologic malignancies that had alterations in the FGFR1 gene,” Langmuir noted.
That disorder, relapsed or refractory MLNs with FGFR1 rearrangement, was once known as 8p11 myeloproliferative syndrome.
Langmuir added that while the disease is extremely rare (Incyte said in a statement that the disease impacts less than 1 in 100,000 people in the US), it presents in different ways, such as lymphoma or leukemia. But all of these presentations have what Langmuir called a “chromosomal translocation,” where a chromosome breaks and reattaches to different chromosomes, at specific chromosome 8p11.
The FDA approval was based on data from Incyte’s Phase II FIGHT-203 study, which tested safety and efficacy in 28 patients with relapsed or refractory MLNs with FGFR1 rearrangement in a single-arm trial. However, the trial continued enrollment and ultimately finished with 47 patients. Langmuir said that Incyte will be presenting data on the entire set of patients at a later date.
According to the statement, at least 17 patients achieved a complete response across multiple cohorts, with the time to response ranging from as short as 44 days to well over a year, in one case. Median time to response was 104 days in one subset of patients.
The most common adverse reactions in patients, Incyte said, included hyperphosphatemia (abnormally high serum phosphate levels), nail toxicity, alopecia and stomatitis.
As for future indications, Langmuir added that Phase II studies are ongoing and testing Pemazyre in glioblastoma and lung cancer. However, Incyte will wait on the data readouts before confirming that those indications are what the company will pursue next.