Dramatic Clinical Response to a Novel Form of Cell Therapy SL-28 in a Patient with Prostate Cancer and Bone...

Prostate cancer is the most common malignancy among older man and often a challenge owing to its rapid spread and age-related comorbidities. SL-28 (Leukocyte-Tells) is a novel cell therapy that uses allogeneic leukocytes whose anticancer activity is altered ex vivo using the recently discovered Universal Receptive System.

A 79-year-old man with Т2сNOMx1, Gleason 7 (3+4) adenocarcinoma of the prostate, with a total PSA level of 10.6 ng/mL and free PSA:total PSA ratio of 11.4% received hormone therapy. Due to an insufficient clinical response and poor tolerance to the therapy, the patient underwent novel allogeneic SL-28 cell therapy.

SL-28 therapy was well-tolerated, with no serious adverse effects. The levels of laboratory markers of prostate cancer, such as prostate-specific antigen, gradually improved from the second week of SL-28 therapy. Complete responses, including the resolution of bone metastasis within 4 months of therapy, were confirmed by computed tomography and histology.

SL-28 was efficient and safe approach in a patient with stage IV prostate cancer, supporting its potential in an allogeneic cell therapy for advanced malignancies.