A Phase 1/2, Open-label, Safety and Dosing Study of Autologous CART Cells (Desmoglein 3 Chimeric Autoantibody Receptor T Cells [DSG3-CAART] or CD19-specific Chimeric Antigen Receptor T Cells [CABA-201]) in Subjects With Active, Pemphigus Vulgaris (RESET-PV)

Inclusion Criteria for DSG3-CAART: Closed to enrollment

* Confirmed diagnosis of mPV by prior or screening biopsy and prior positive anti- DSG3 antibody ELISA
* mPV inadequately managed by at least one standard immunosuppressive therapies
* Active mPV at screening
* Anti-DSG3 antibody ELISA positive at screening

Inclusion Criteria for CABA-201 sub-study: Open to enrollment

* Age ≥18
* Confirmed diagnosis of PV by prior or screening biopsy and prior positive DSG3 ELISA, IIF, and/or DIF
* PV inadequately managed by at least one standard immunosuppressive therapy
* Active PV at screening
* DSG3 ELISA positive at screening

Exclusion Criteria:

* Active cutaneous lesions associated with PV that indicates mucocutaneous rather than mucosal-dominant disease
* Rituximab in last 12 months unless PV symptoms have recently worsened or anti-DSG3 antibody titers have recently increased
* Prednisone \> 0.25mg/kg/day
* Other autoimmune disorder requiring immunosuppressive therapies
* Investigational treatment in last 3 months

Exclusion Criteria for CABA-201 sub-study

* Have paraneoplastic pemphigus or active malignancy (not including non-melanoma skin cancer) or malignancy diagnosed within the previous 5 years
* Have received rituximab or other anti-CD20 or anti-CD19 therapies in last 12 months unless anti-DSG3 antibody titers have recently increased or PV symptoms have recently worsened
* Prednisone \> 0.25mg/kg/day
* Other autoimmune disorder requiring immunosuppressive therapies
* Treatment with any investigational agent within 4 weeks or 5 half-lives, whichever is longer.