On December 27, 2019 MorphoSys AG (FSE: MOR; Prime Standard Segment; MDAX & TecDAX; NASDAQ: MOR) reported that the first patient has been dosed in a phase 1b clinical study of MorphoSys’ proprietary human anti-CD19 antibody tafasitamab in newly diagnosed diffuse large B cell lymphoma (DLBCL) (Press release, MorphoSys, DEC 27, 2019, View Source [SID1234552617]). The phase 1b study is an open-label, randomized, multicenter study to evaluate safety and preliminary efficacy of tafasitamab in addition to R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristin, prednison) as well as tafasitamab and lenalidomide in addition to R-CHOP in adult patients with newly diagnosed, previously untreated DLBCL. Patients enrolled in each arm will receive six cycles of treatment. The primary endpoint is the incidence and severity of treatment-emergent adverse events (AEs), key secondary endpoints are objective response rate (ORR) and PET-negative complete response (CR) rate at the end of treatment.
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"It is a great opportunity for us to expand the clinical development of tafasitamab into firstline DLBCL," said Dr. Malte Peters, Chief Development Officer of MorphoSys. "Based on the encouraging results we have seen so far with tafasitamab in relapsed and refractory DLBCL, we are now looking forward to explore the potential of tafasitamab in addition to
R-CHOP or lenalidomide and R-CHOP in newly diagnosed DLBCL. This phase 1b study forms the basis for a subsequent pivotal phase 3 study in front line DLBCL. DLBCL is an aggressive and very challenging disease and we hope to improve the current R-CHOP standard of care by adding tafasitamab and lenalidomide to offer a potential new treatment option for these critically ill patients."
About tafasitamab (MOR208)
Tafasitamab (formerly MOR208) is an investigational humanized Fc-engineered monoclonal antibody directed against CD19. Fc-modification of tafasitamab is intended to lead to a significant potentiation of antibody-dependent cell-mediated cytotoxicity (ADCC) and antibody-dependent cellular phagocytosis (ADCP), thus aiming to improve a key mechanism of tumor cell killing. Tafasitamab has been observed in preclinical models to induce direct apoptosis by binding to CD19, which is assumed to be involved in B cell receptor (BCR) signaling.
MorphoSys is clinically investigating tafasitamab as a therapeutic option in B cell malignancies in a number of ongoing combination trials. An open-label phase 2 combination trial (L-MIND study) is investigating the safety and efficacy of tafasitamab in combination with lenalidomide in patients with relapsed/refractory DLBCL who are not eligible for high-dose chemotherapy (HDC) and autologous stem cell transplantation (ASCT). Based on interim data from L-MIND, in October 2017 the U.S. FDA granted Breakthrough Therapy Designation for tafasitamab plus lenalidomide in this patient population. B-MIND is a phase 3 study assessing the combination of tafasitamab and bendamustine versus rituximab and bendamustine in r/r DLBCL. In addition, tafasitamab is currently being investigated in patients with relapsed/refractory CLL/SLL after discontinuation of a prior Bruton tyrosine kinase (BTK) inhibitor therapy (e.g. ibrutinib) in combination with idelalisib or venetoclax.