Afamitresgene autoleucel: Single infusion of afamitresgene autoleucel Dose: For subjects ≥10 kg to \<40 kg: starting dose of 0.025 - 0.200 x 10'9 transduced cells/kg. For subjects ≥40 kg 1.0x109 to 10x109 transduced by a single intravenous infusion
Study summary
This is a pediatric basket study to investigate the safety and efficacy of afamitresgene autoleucel in HLA-A\*02 eligible and MAGE-A4 positive subjects aged 2-17 years of age with advanced cancers.
Eligibility
Sex
ALL
Min age
2 Years
Max age
21 Years
Healthy volunteers
No
Inclusion Criteria:
* Subject has histologically confirmed diagnosis of any one of the following cancers: (A) Synovial Sarcoma (SS), (B) MPNST, (C) Neuroblastoma, or (D) Osteosarcoma (OS).
* Age:
(A) Synovial Sarcoma: 2 to 17 years (B) MPNST, Neuroblastoma and Osteosarcoma: 2 to 21 years
* Body weight ≥ 10 kg
* Must have previously received a systemic chemotherapy
* Measurable disease prior to lymphodepletion according to RECIST v1.1 (or INCR, 2017 Neuroblastoma only).
* HLA-A\*02 positive
* Tumor shows MAGE-A4 expression confirmed by central laboratory.
* Performance Status:
(A) Subjects ≥16: Eastern Cooperative Oncology Group (ECOG) 0 or 1 (B) Subjects 2 to 16: Lansky score ≥ 80
• Subject has anticipated life expectancy of greater than 3 months in the opinion of the investigator.
Exclusion Criteria:
* Positive for HLA-A\*02:05 in either allele; or any A\*02 having same protein sequence as HLA-A\*02:05
* History of allergic reactions attributed to compounds of similar chemical or biologic composition to fludarabine, cyclophosphamide.
* History of autoimmune or immune mediated disease
* Known central nervous system (CNS) metastases.
* Other prior malignancy that is not considered by the Investigator to be in complete remission
* Clinically significant cardiovascular disease
* Active infection with human immunodeficiency virus, hepatitis B virus, hepatitis C virus, or human T cell leukemia virus
* Pregnant or breastfeeding
* Experiencing ongoing rapid disease progression that in the opinion of the Investigator significantly increases the subjects risk associated with treatment.
Primary outcome measure(s)
Incidence, duration, and severity of Treatment Emergent Adverse Events as assessed by Investigator Evaluation. — 3.5 years Determination of incidence, severity and duration of adverse events
* Incidence of dose limiting toxicities DLTs
* AEs including serious adverse events (SAEs)
* Incidence, severity, and duration of the AEs of special interest
* Replication competent lentivirus (RCL)
* T-cell clonality and insertional oncogenesis (IO)
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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