Altavant Sciences has signed a definitive agreement to acquire private drug development firm Onspira Therapeutics.

Specific financial details of the transaction are yet to be divulged by either company. However, Onspira’s shareholders received an upfront payment, eligible for milestone payments and royalties on net sales.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

The acquisition, already closed, provides Altavant with rights over OSP-101, a novel inhaled interleukin-1 receptor antagonist (IL-1Ra) to treat bronchiolitis obliterans syndrome (BOS).

The OSP-101 already received orphan drug designation from the US Food and Drug Administration (FDA).

BOS is a progressive inflammatory condition that blocks normal airflow in the lungs.

The non-infectious complication is usually found among people who previously underwent lung transplantation and hematopoietic stem cell transplantation.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

BOS can also be caused by autoimmune diseases and exposure to certain chemicals.

Altavant CEO William T Symonds said: “Adding OSP-101 to our pipeline creates significant value for Altavant, while also furthering our mission to develop drugs for patients with very serious and rare lung diseases.

“Although a majority of lung transplant recipients develop this life-threatening condition, there are no treatments approved specifically for BOS and the current therapies have limited efficacy.”

CoOnspira Therapeutics CEO Brian Lortie said: “We have been impressed by the talented and experienced professionals at Altavant, and we are confident that they are the right team to develop OSP-101 for the treatment of post-lung transplant BOS.

“This is an important programme to bring forward for the benefit of lung transplant patients, and we believe Altavant is well-positioned to achieve this goal.”

The Onspira Therapeutics acquisition comes several months after Altavant Sciences itself became part of Sumitomo Dainippon group following a $3bn deal.

Pharmaceutical Technology Excellence Awards - Nominations Closed

Nominations are now closed for the Pharmaceutical Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
Imagene’s Oncology Intelligence (OI) Suite has won the Innovation Award for Precision Oncology, for transforming how pharma designs and runs oncology trials. From AI-driven biomarker discovery to smarter patient stratification, see how Imagene is cutting time, cost and risk in cancer drug development.

Discover the Impact