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Friday, Jul 10, 2026

Spectrum Ends Work on Enlarged Prostate Drug

Irvine-based drug maker Spectrum Pharmaceuticals Inc. said Wednesday that it would stop work on a drug for treating benign enlarged prostates.

Spectrum said it expects to save up to $40 million by dropping further clinical work on ozarelix, Chief Executive Rajesh Shrotriya said in a statement.

The company said that mixed results of an earlier second-phase study, along with the recently announced failure of a similar drug being developed by Canada’s Aeterna Zentaris Inc., didn’t support continued development of ozarelix.

Spectrum received a license from Aeterna Zentaris to develop and market ozarelix in 2004.

The company makes drugs for bone cancer and non-Hodgkin’s lymphoma, a form of blood cancer.

Spectrum has yearly sales of about $30 million.

The company is seeking to get approval to expand the usage of its bone cancer drug Fusilev to treat colon cancer.

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