Raze Ther­a­peu­tics, the Cam­bridge start­up that launched in 2014 with $24 mil­lion in sup­port, is call­ing it quits.

The com­pa­ny was look­ing to ad­vance a new class of can­cer ther­a­peu­tics that tar­get key meta­bol­ic path­ways, but it ap­pears the sci­ence wasn’t quite ready for prime time.

Bruce Booth

Seed­ed in part by At­las Ven­ture, the com­pa­ny was fo­cused on can­cer an­a­bol­ic me­tab­o­lism, specif­i­cal­ly mi­to­chon­dr­i­al one-car­bon en­er­get­ics. The space has emerged re­cent­ly as a ma­jor dri­ver of can­cer pro­lif­er­a­tion, sur­vival, and bio­mass ac­cu­mu­la­tion. But ap­par­ent­ly the tech was too tough to con­tin­ue.

“Al­though it made in­trigu­ing progress, the un­der­ly­ing can­cer me­tab­o­lism bi­ol­o­gy was too com­pli­cat­ed to war­rant fur­ther in­vest­ment,” wrote Bruce Booth, part­ner at At­las, in a re­cent port­fo­lio up­date.

Such is life in biotech. Yet a new start­up has emerged in its place: Kyn Ther­a­peu­tics. Backed in part by At­las (and ex­plor­ing a sim­i­lar space), Kyn an­nounced a $49 mil­lion Se­ries A round this morn­ing. The com­pa­ny is led by a Raze’s for­mer CSO Mark Man­fre­di, an At­las en­tre­pre­neur-in-res­i­dence.

When asked what hap­pened at Raze, Man­fre­di said the com­pa­ny still had as­sets and col­lab­o­ra­tions, but no longer em­ployed any­one.

Pe­ter Bar­rett

The com­pa­ny was co-found­ed and led by At­las’ Pe­ter Bar­rett, and its sci­en­tif­ic founders in­clud­ed Vam­si Mootha (The Howard Hugh­es Med­ical In­sti­tute, Mass­a­chu­setts Gen­er­al Hos­pi­tal), Josh Ra­bi­nowitz (Prince­ton), and David Saba­ti­ni (White­head/MIT).

Ac­cord­ing to Booth, Raze’s sci­en­tif­ic as­sets went back in­to acad­e­mia for fur­ther ex­plo­ration.

While the US biosimilars industry has generally been a disappointment since its inception, with FDA approving 33 biosimilars since 2015, just a fraction of those have immediately followed their approvals with launches. And more than a handful of biosimilars for two of the biggest blockbusters of all time — AbbVie’s Humira and Amgen’s Enbrel — remain approved by FDA but still have not launched because of legal settlements.

Kura Oncology is clear to resume studies for its early-stage leukemia program after the FDA lifted a clinical hold Thursday afternoon.

Regulators had placed the hold on a Phase Ib study of KO-539, an experimental oral treatment for some genetic subsets of acute myeloid leukemia last November after a patient died while taking the drug. Kura expects to begin enrolling patients again imminently, CEO Troy Wilson told Endpoints News.