Immix Biopharma Announces Complete Response in 9th Relapsed/Refractory AL Amyloidosis Patient in NXC-201 Clinical Trial at IMS 20th Annual Meeting
- Positive clinical data with high response rates
- Best responder with 19.2 months duration of response
- Plans to submit BLA for FDA approval
- One-time treatment could be an alternative to current therapies
- Favorable tolerability profile and ability to clear disease-causing amyloid chains
- None.
100% (9/9) overall response rate and67% (6/9) complete response rate (MRD 10-5) observed in heavily pre-treated patients with daratumumab relapsed/refractory AL Amyloidosis as of the September 20, 2023 data cutoff100% (4/4) overall response rate and75% (3/4) complete response rate observed in t(11;14) relapsed/refractory AL Amyloidosis- Best responder duration of response was 19.2 months with response ongoing; median follow-up of 7.3 months (range: 2.5 – 16.5 months) as of the data cutoff date of September 20, 2023
- ImmixBio plans to submit a BLA for FDA approval in AL Amyloidosis once 40 patients are treated with NXC-201
- The expected primary endpoint for NXC-201 in relapsed/refractory AL Amyloidosis is overall response rate
LOS ANGELES, Oct. 03, 2023 (GLOBE NEWSWIRE) -- Immix Biopharma, Inc. (“ImmixBio”, “Company”, “We” or “Us”), today announced presentation of additional AL Amyloidosis clinical data from its Phase 1b/2a NEXICART-1 (NCT04720313) study of novel, autologous, BCMA-targeted chimeric antigen receptor T (CAR-T) cell therapy, NXC-201, at an oral presentation at the 20th International Myeloma Society Annual (IMS) Meeting being held in Athens, Greece on September 27-30 2023. One new patient and additional follow-up data from an additional 8 patients (9 total) are included in this update. All patients were DARZALEX ® (daratumumab) combination therapy relapsed/refractory and experienced a median of 6 earlier treatments that failed to stop worsening of disease (lines of therapy) prior to receiving NXC-201.
“There are no approved drugs for relapsed/refractory AL Amyloidosis,” said Polina Stepensky, M.D., Director of the Hadassah Medical Organization’s Department of Bone Marrow Transplantation and Immunotherapy for Adults and Children, and principal study investigator. “NXC-201’s
“Currently, AL Amyloidosis treatment involves repeat dosing and weekly distant travel to academic medical centers,” said Ilya Rachman, M.D., Ph.D., Chief Executive Officer of Immix Biopharma. “One-time treatment with NXC-201 could fill the void for relapsed/refractory AL Amyloidosis, where there are no therapies approved today, while restoring quality of life.”
Gabriel Morris, Chief Financial Officer of Immix Biopharma, added, “NXC-201’s uniquely favorable CAR-T tolerability profile and an apparent ability to clear disease-causing amyloid chains from the body within ~30 days could make it particularly suitable for treatment in a potential outpatient setting.”
Immix Biopharma Announces Complete Response in 9th Relapsed/Refractory AL Amyloidosis Patient in NXC-201 Clinical Trial at IMS 20th Annual Meeting
Data were presented from 9 relapsed/refractory AL amyloidosis patients (including one new patient) in the ongoing Phase 1b/2a NEXICART-1 study of NXC-201 (formerly HBI0101). Patients were infused with CAR+T cells at doses of 150 x 106 (n=1), 450 x 106 (n=2), and 800 x 106 (n=6).
Of the 9 patients, 7/9 patients had cardiac involvement and 4/9 patients were t(11;14) relapsed/refractory. Median follow-up was 7.3 months (range: 2.5 – 16.5 months) as of the September 20, 2023 data cutoff. Data highlights:
9 relapsed/refractory AL amyloidosis patients (median 6 lines of prior therapy):
- Overall response rate of
100% (9/9) - Complete response rate of
67% (6/9) (MRD 10-5) - Organ response rate of
56% (5/9) - Best responder had a duration of response of 19.2 months as of the data cutoff of September 20, 2023, with response ongoing
- There were no immune effector cell-associated neurotoxicity syndrome (ICANS) events or grade 4 cytokine release syndrome (CRS) events reported
44% (4/9) had MAYO-stage IIIa/IIIb disease
For the 7 relapsed/refractory AL Amyloidosis patients with cardiac involvement:
- Overall response rate of
100% (7/7) - Complete response rate of
57% (4/7) (MRD 10-5) - Organ response rate of
57% (4/7)
4 patients with t(11;14) relapsed/refractory AL Amyloidosis:
- Overall response rate of
100% (4/4) - Complete response rate of
75% (3/4) (MRD 10-5) - Organ response rate of
50% (2/4)
The 20th IMS AL Amyloidosis presentation can be accessed on the ImmixBio corporate website at this link: https://immixbio.com/pipeline/#publications
Oral Presentation:
| Event | 20th International Myeloma Society Annual Meeting, Athens, Greece |
| Title | “Feasibility of a novel academic anti-BCMA chimeric antigen receptor T-cell (CART) (HBI0101) for the treatment of relapsed and refractory AL amyloidosis” |
| Presentation Date/Time (EEST) |
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About NEXICART-1
NEXICART-1 (NCT04720313) is an ongoing Phase 1b/2a, open-label study evaluating the safety and efficacy of NXC-201 (formerly HBI0101), in adults with relapsed or refractory multiple myeloma and AL amyloidosis.
The primary objective of the Phase 1b portion of the study was to characterize the safety and confirm the recommended Phase 2 dose (RP2D) and Phase 2 dose of NXC-201. The Phase 2 portion of the study will evaluate the efficacy and safety of NXC-201 with endpoints of overall survival, progression-free survival and response rates, according to International Myeloma Working Group (IMWG) Uniform Response Criteria.
The Phase 1b portion of the ongoing Phase 1b/2a clinical trial has been successful in determining the recommended Phase 2 dose (RP2D) of 800 million CAR+T cells. The expected primary endpoint for the Phase 2 portion of the ongoing Phase 1b/2a clinical trial of NXC-201 in relapsed/refractory multiple myeloma is overall response rate and duration of response. ImmixBio subsidiary Nexcella plans to submit data to the FDA in multiple myeloma once 100 patients are treated with NXC-201. The expected primary endpoint for NXC-201 in relapsed/refractory AL Amyloidosis is overall response rate. ImmixBio subsidiary Nexcella plans to submit data to the FDA in AL amyloidosis once 30-40 patients are treated with NXC-201.
About NXC-201
NXC-201 (formerly HBI0101) is a BCMA-targeted investigational chimeric antigen receptor T (CAR-T) cell therapy that is being studied in a comprehensive clinical development program for the treatment of patients with relapsed or refractory multiple myeloma and AL amyloidosis.
About AL Amyloidosis
AL amyloidosis is a rare systemic disorder caused by an abnormality of plasma cells in the bone marrow. Misfolded amyloid proteins produced by plasma cells buildup in and around tissues, nerves and organs, gradually affecting their function. This can cause progressive and widespread organ damage, and high mortality rates.
AL amyloidosis affects roughly 30,000 – 40,000 patients in total throughout the U.S. and Europe, and it is estimated that there are approximately 3,000 – 4,000 new cases of AL amyloidosis annually in the U.S. The annual global incidence of AL Amyloidosis is ~15,000 patients.
The Amyloidosis market was
About Immix Biopharma, Inc.
Immix Biopharma, Inc. (“ImmixBio”) (Nasdaq: IMMX) is a clinical-stage biopharmaceutical company pioneering personalized therapies for oncology and immunology. Our lead CAR-T cell therapy asset, NXC-201, is being developed for relapsed/refractory AL Amyloidosis and relapsed/refractory multiple myeloma. Initial response rates of
About Nexcella, Inc.
Nexcella, Inc., a subsidiary of Immix Biopharma, Inc. (NASDAQ:IMMX), is a Los Angeles, California based clinical-stage biopharmaceutical company engaged in the discovery and development of novel cell therapies for oncology and other indications. Our lead candidate, next generation BCMA-targeted CAR-T NXC-201 for relapsed/refractory multiple myeloma and relapsed/refractory AL amyloidosis, has produced
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