Allogene (ALLO) Down 20% on Strategic Changes in Pipeline

Allogene (ALLO) Down 20% on Strategic Changes in Pipeline

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Shares of Allogene Therapeutics ALLO fell 20% in pre-market trading on Jan 5 after management announced its business plans for 2024 and beyond, with major pipeline changes.

As part of its business update, Allogene announced that it is deprioritizing two pivotal mid-stage studies, namely ALPHA2 and EXPAND, evaluating its CAR-T cell therapy candidate ALLO-501A, now known as cemacabtagene ansegedleucel (cema-cel), in third-line large B cell lymphoma (LBCL).

Allogene will focus on developing cema-cel as a frontline treatment for LBCL patients. In this regard, management initiated start-up activities for the phase II ALPHA3 study evaluating cema-cel as a potential first-line treatment for newly diagnosed and treated LBCL patients who are likely to relapse and need further therapy.

Management intends to administer cema-cel to those patients who, despite having completed six cycles of R-CHOP, still have minimal residual disease (MRD). Management estimates that nearly 30% of patients who respond to R-CHOP treatment eventually relapse. The company intends to position cema-cel as the standard seventh cycle.

The ALPHA3 study will enroll nearly 230 patients who are MRD-positive at the end of first-line therapy. These patients will then be randomized to either consolidation with cema-cel or the current standard of care (observation). The primary endpoint of the study is event-free survival (EFS). The study has also been designed to include two lymphodepletion regimens — one combining standard fludarabine and cyclophosphamide with ALLO-647 and another without ALLO-647.

Following this announcement, share prices started to drop in pre-market trading. Though Allogene’s pivot to frontline treatment opens up access to a wider and more lucrative target market, it also delays the company’s plans to bring the product to market by at least a couple of years.

Initially, Allogene had plans to complete enrolment in the ALPHA2 study by the first half of this year, with a data readout planned before this year’s end. It had plans to secure a potential marketing approval in the next year. However, with the company’s change in business plans and a fresh new study in the works, a potential filing is not expected up until 2026/2027. This was likely one of the main reasons for the share price drop.

In the past year, Allogene’s shares have lost 44.3% compared with the industry’s 11.9% fall.

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Despite the decision to deprioritize the ALPHA2 study, management intends to start a new cohort that will evaluate cema-cel in patients with chronic lymphocytic leukemia (CLL) based on investigator enthusiasm. This new cohort will enroll 12 patients beginning this quarter and intends to report initial data by the year-end.