A Study of LCAR-AIO in Subjects With Relapsed/Refractory Autoimmune Diseases

Inclusion Criteria:

1. Subjects voluntarily participate in clinical research.

2. Age 18-65 years.

3. Adequate organ function at screening.

4. Clinical laboratory values meet criteria at screening.

SLE:

• Have been diagnosed of SLE at least 6 months before screening.

• At screening, antinuclear antibody, and/or anti-dsDNA antibody, and/or anti-Smithantibody should be positive.

• Fulfill relapsed/refractory SLE conditions.

AAV:

• Have been diagnosed of AAV before screening.

• Positive test for anti-PR3 or anti-MPO antibodies at screening.

• Fulfill relapsed/refractory AAV conditions.

SSc:

• Have been diagnosed of SSc before screening.

• At screening, mRSS is higher than 10.

• Fulfill relapsed/refractory SSc conditions.

IIM:

• Have been diagnosed of IIM before screening.

• Positive test for myositis-associated antibodies or myositis-specific antibodies atscreening.

• Fulfill relapsed/refractory IIM conditions.

Exclusion Criteria:

1. Active infections such as hepatitis and tuberculosis.

2. Other autoimmune diseases.

3. Serious underlying diseases such as tumor, uncontrolled diabetes.

4. Female subjects who were pregnant, breastfeeding, or planning to become pregnantwhile participating in this study or within 1 year of receiving LCAR-AIO treatment.

5. Participated in other clinical trials within 4 weeks.