Afamitresgene autoleucel for advanced synovial sarcoma and myxoid round cell liposarcoma (SPEARHEAD-1) : an international, open-label, phase 2 trial

Copyright © 2024 Elsevier Ltd. All rights reserved..

BACKGROUND: Afamitresgene autoleucel (afami-cel) showed acceptable safety and promising efficacy in a phase 1 trial (NCT03132922). The aim of this study was to further evaluate the efficacy of afami-cel for the treatment of patients with HLA-A*02 and MAGE-A4-expressing advanced synovial sarcoma or myxoid round cell liposarcoma.

METHODS: SPEARHEAD-1 was an open-label, non-randomised, phase 2 trial done across 23 sites in Canada, the USA, and Europe. The trial included three cohorts, of which the main investigational cohort (cohort 1) is reported here. Cohort 1 included patients with HLA-A*02, aged 16-75 years, with metastatic or unresectable synovial sarcoma or myxoid round cell liposarcoma (confirmed by cytogenetics) expressing MAGE-A4, and who had received at least one previous line of anthracycline-containing or ifosfamide-containing chemotherapy. Patients received a single intravenous dose of afami-cel (transduced dose range 1·0 × 109-10·0 × 109 T cells) after lymphodepletion. The primary endpoint was overall response rate in cohort 1, assessed by a masked independent review committee using Response Evaluation Criteria in Solid Tumours (version 1.1) in the modified intention-to-treat population (all patients who received afami-cel). Adverse events, including those of special interest (cytokine release syndrome, prolonged cytopenia, and neurotoxicity), were monitored and are reported for the modified intention-to-treat population. This trial is registered at ClinicalTrials.gov, NCT04044768; recruitment is closed and follow-up is ongoing for cohorts 1 and 2, and recruitment is open for cohort 3.

FINDINGS: Between Dec 17, 2019, and July 27, 2021, 52 patients with cytogenetically confirmed synovial sarcoma (n=44) and myxoid round cell liposarcoma (n=8) were enrolled and received afami-cel in cohort 1. Patients were heavily pre-treated (median three [IQR two to four] previous lines of systemic therapy). Median follow-up time was 32·6 months (IQR 29·4-36·1). Overall response rate was 37% (19 of 52; 95% CI 24-51) overall, 39% (17 of 44; 24-55) for patients with synovial sarcoma, and 25% (two of eight; 3-65) for patients with myxoid round cell liposarcoma. Cytokine release syndrome occurred in 37 (71%) of 52 of patients (one grade 3 event). Cytopenias were the most common grade 3 or worse adverse events (lymphopenia in 50 [96%], neutropenia 44 [85%], leukopenia 42 [81%] of 52 patients). No treatment-related deaths occurred.

INTERPRETATION: Afami-cel treatment resulted in durable responses in heavily pre-treated patients with HLA-A*02 and MAGE-A4-expressing synovial sarcoma. This study shows that T-cell receptor therapy can be used to effectively target solid tumours and provides rationale to expand this approach to other solid malignancies.

FUNDING: Adaptimmune.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:403

Enthalten in:

Lancet (London, England) - 403(2024), 10435 vom: 13. Apr., Seite 1460-1471

Sprache:

Englisch

Beteiligte Personen:

D'Angelo, Sandra P [VerfasserIn]
Araujo, Dejka M [VerfasserIn]
Abdul Razak, Albiruni R [VerfasserIn]
Agulnik, Mark [VerfasserIn]
Attia, Steven [VerfasserIn]
Blay, Jean-Yves [VerfasserIn]
Carrasco Garcia, Irene [VerfasserIn]
Charlson, John A [VerfasserIn]
Choy, Edwin [VerfasserIn]
Demetri, George D [VerfasserIn]
Druta, Mihaela [VerfasserIn]
Forcade, Edouard [VerfasserIn]
Ganjoo, Kristen N [VerfasserIn]
Glod, John [VerfasserIn]
Keedy, Vicki L [VerfasserIn]
Le Cesne, Axel [VerfasserIn]
Liebner, David A [VerfasserIn]
Moreno, Victor [VerfasserIn]
Pollack, Seth M [VerfasserIn]
Schuetze, Scott M [VerfasserIn]
Schwartz, Gary K [VerfasserIn]
Strauss, Sandra J [VerfasserIn]
Tap, William D [VerfasserIn]
Thistlethwaite, Fiona [VerfasserIn]
Valverde Morales, Claudia Maria [VerfasserIn]
Wagner, Michael J [VerfasserIn]
Wilky, Breelyn A [VerfasserIn]
McAlpine, Cheryl [VerfasserIn]
Hudson, Laura [VerfasserIn]
Navenot, Jean-Marc [VerfasserIn]
Wang, Tianjiao [VerfasserIn]
Bai, Jane [VerfasserIn]
Rafail, Stavros [VerfasserIn]
Wang, Ruoxi [VerfasserIn]
Sun, Amy [VerfasserIn]
Fernandes, Lilliam [VerfasserIn]
Van Winkle, Erin [VerfasserIn]
Elefant, Erica [VerfasserIn]
Lunt, Colin [VerfasserIn]
Norry, Elliot [VerfasserIn]
Williams, Dennis [VerfasserIn]
Biswas, Swethajit [VerfasserIn]
Van Tine, Brian A [VerfasserIn]

Links:

Volltext

Themen:

Clinical Trial, Phase II
HLA-A Antigens
Ifosfamide
Journal Article
UM20QQM95Y

Anmerkungen:

Date Completed 15.04.2024

Date Revised 15.04.2024

published: Print-Electronic

ClinicalTrials.gov: NCT04044768

Citation Status MEDLINE

doi:

10.1016/S0140-6736(24)00319-2

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370442490