Study summary

CAR T cells put 9 of 10 people with severe lupus into remission without other drugs

CASTLE CAR T trial · 24 people (10 with lupus), phase 1/2a · Published January 2026, Nature Medicine

9 of 10people with lupus reached remission

What was tested

Zorpocel, a CD19 CAR T-cell therapy that wipes out B cells and lets the immune system reset, for severe treatment-resistant lupus and other autoimmune diseases.

What they found

What it means

Possibly the first route to drug-free remission in severe lupus. Small, uncontrolled studies so far; randomized trials are starting.

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Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.