UK regulator approves Rein Therapeutics’ phase 2 trial for IPF drug

Published 19/08/2025, 13:08
UK regulator approves Rein Therapeutics’ phase 2 trial for IPF drug

LONDON - Rein Therapeutics (NASDAQ:RNTX), a clinical-stage biotech company currently valued at $26 million, announced Tuesday that the UK Medicines and Healthcare products Regulatory Agency (MHRA) has authorized the initiation of its Phase 2 RENEW clinical trial for LTI-03, the company’s lead drug candidate for idiopathic pulmonary fibrosis (IPF). According to InvestingPro data, the company maintains a strong balance sheet with more cash than debt, positioning it well for this clinical development phase.

The RENEW trial is expected to enroll up to 120 patients worldwide, evaluating two dose groups of LTI-03 against a placebo over 24 weeks of treatment. The primary objective will assess safety and tolerability, while secondary endpoints will include measures of lung function and imaging-based assessments of fibrosis progression.

IPF is a progressive lung disease that scars the lungs, leaving patients short of breath and with limited treatment options. Median survival after diagnosis is approximately 3-5 years.

"This MHRA approval marks an important milestone not only for Rein, but also for patients living with IPF," said Brian Windsor, Chief Executive Officer of Rein Therapeutics, according to the company’s press release.

LTI-03 is described as a first-in-class therapy designed to target fibrosis while protecting the lung’s ability to regenerate healthy tissue. The drug has received Orphan Drug Designation in the U.S.

Rein Therapeutics is currently working with clinical sites in the UK to begin patient recruitment, with initial data expected in 2026.

The Austin-based biopharmaceutical company focuses on developing therapies for orphan pulmonary and fibrosis indications. Its second product candidate, LTI-01, has completed Phase 1b and Phase 2a clinical trials for the treatment of loculated pleural effusions.

In other recent news, Rein Therapeutics reported a downgrade from Brookline Capital Markets, which shifted its stock rating from Buy to Hold. This change was attributed to concerns over delays in clinical trials and challenges in securing funding. The downgrade came after a second-quarter update that Brookline described as "disappointing." Meanwhile, Rein Therapeutics announced it has secured up to $21 million in strategic financing. The agreement with Yorkville Advisors Global, LP, includes a $6 million pre-paid advance, with $1 million already funded, and a $15 million standby equity purchase agreement. This financing is intended to support the company’s clinical development programs. Rein Therapeutics is still awaiting a meeting with the FDA concerning a clinical hold on its Phase 2 RENEW trial. These developments reflect ongoing efforts to address both operational and financial challenges.

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