Safety and Efficacy of Anti-FcRL5 CAR-T Cell Therapy in Treating Relapsed and Refractory Multiple Myeloma (R/R MM)

Inclusion Criteria:

The set subject inclusion criteria include multiple documents of multiple myeloma, no effective treatment options (e. g. autologous or allogeneic stem cell transplantation) and limited outcome (\<2 years) with existing therapies, as follows:

1. Age is 18\~70 years old;
2. Expected survival period of\>12 weeks;
3. Multiple myeloma was diagnosed by physical examination, pathological examination, laboratory examination and imaging;
4. Patients with refractory multiple myeloma;
5. Patients with multiple myeloma recurrence;
6. ALT and AST \<3 times normal; bilirubin \<2.0mg / dl;
7. Quality of survival score (KPS)\> 50%;
8. The patient has no serious heart, liver, kidney and other diseases;
9. Recurrence or no disease remission after hematopoietic stem cell transplantation or cellular immunotherapy;
10. Is not suitable for stem cell transplantation conditions or to abandon transplantation due to conditional restrictions;
11. Blood can be obtained intravenously, without other contraindications to leukapheresis;
12. Understand and voluntarily sign a written informed consent form.

Exclusion Criteria:

1. Women who are pregnant or breastfeeding, or who have a pregnancy plan within six months;
2. Infectious diseases (such as HIV, active tuberculosis, etc.);
3. Active hepatitis B or hepatitis C infection;
4. Feasibility assessment screening demonstrated \<10% transfection of targeted lymphocytes or underamplification under CD3 / CD28 costimulation (\<5-fold);
5. Abnormal vital signs, and unable to cooperate with the examination;
6. Have mental or mental illness who cannot cooperate with the treatment and efficacy evaluation;
7. Highly allergic constitution or have a history of severe allergies, especially allergic to IL-2;
8. Subjects with a systemic infection or a severe local infection requiring anti-infective treatment;
9. Subjects with severe autoimmune disease;
10. The doctor believes there were other reasons for inclusion