Boundless Bio is trimming its oncology pipeline in the wake of disappointing cancer data and switching up its leadership just eight months after debuting on the Nasdaq.
The San Diego-based biotech has decided not to advance its oral RNR inhibitor BBI-825 to the second part of the Phase 1/2 STARMAP trial in patients with certain mutated solid tumors, according to a news
release
published Friday.
Boundless shares
$BOLD
were down around 15% when the market opened Friday.
BBI-825 was well tolerated in the study, but unfavorable preliminary PK data, combined with the “evolving” nature of the BRAF- and KRAS-mutated cancer landscape as well as cost considerations, drove Boundless to shelve the candidate.
The end of STARMAP leaves the biotech with just one clinical-stage program — an oral CHK1 inhibitor named BBI-355. This is being tested alone and in various combinations in the open-label Phase 1/2
POTENTIATE
trial of patients with oncogene-amplified solid tumors, with initial proof-of-concept data expected in the second half of 2025.
POTENTIATE is currently enrolling patients, with a target of 150. The first participant was
dosed
in April, according to the company.
As for its management, Boundless said its chief medical officer Klaus Wagner will leave at the end of the month, followed by chief business officer Neil Abdollahian in early January. The company’s advisor James Freddo will step into the CMO role on an interim basis. The company does not plan to hire a new CBO.
Boundless listed on the Nasdaq in March via a
$100 million
initial public offering.