April 30, 2025

Novel CAR-T therapy shows promise against hard-to-treat cancer

A groundbreaking CAR-T cell therapy has emerged as a potential game-changer for patients with hard-to-treat lymphomas. The innovative treatment, developed by Brazilian researchers, demonstrated a remarkable 100% overall response rate in a Phase I clinical trial. Targeting the CD30 protein, the therapy showed exceptional efficacy, with half of the patients experiencing complete remission and long-term cell persistence. These results offer renewed hope for patients with refractory lymphomas who have exhausted traditional treatment options.

"The most remarkable aspect is the 100 per cent overall response rate" - Dr. Javier Briones, Sant Pau Research Institute

A team of Brazilian researchers has developed an innovative CAR-T cell therapy that showed positive results in patients with a refractory type of lymphoma -- cancer in lymph nodes, spleen, and bone marrow.

Key Points

1 Innovative CAR-T therapy targets CD30+ lymphoma with unprecedented response

2 50% of patients achieve complete disease remission

3 Therapy demonstrates long-lasting T-cell persistence

4 Phase I trial shows promising results without major toxicities

HSP-CAR30 is the first European CAR-T30 study to successfully complete its initial phase.

The results of the Phase I trial, published in the journal Blood, trial revealed that the new therapy which targets the CD30 protein has shown high efficacy in patients with refractory CD30+ lymphoma.

The therapy also promotes the expansion of memory T cells, leading to long-lasting responses and improved clinical outcomes in treated patients.

"The most remarkable aspect is the 100 per cent overall response rate, which is extremely rare in patients who have undergone multiple lines of treatment. Additionally, 50 per cent of patients achieved complete remission, meaning the disease was undetectable in imaging studies and clinical analyses," said Dr. Javier Briones, Head of the Hematological Oncology at the Sant Pau Research Institute (IR Sant Pau).

About 60 per cent of patients who achieved a complete response remained in remission with no signs of relapse after a median follow-up of 34 months.

"This is crucial," Briones said, "because it indicates that the persistence of CAR-T cells in the body has a real and lasting impact on the disease, which is precisely what we aim for with this type of therapy."

While CAR-T cell therapies have emerged as a promising alternative for treating B-cell leukemias and lymphomas, their application to CD30+ lymphomas has been limited due to the lack of persistence of modified cells and the high relapse rate among patients.

The Phase I trial involved 10 patients with relapsed or refractory classical Hodgkin lymphoma or CD30+ T-cell lymphoma, yielding highly positive results.

No dose-limiting toxicities were detected.

One of the most significant findings of the study was the high in vivo persistence of CAR30+ cells, which remained detectable in 60 per cent of evaluable patients one year after infusion.

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