Is the nephritogenic antigen in post-streptococcal glomerulonephritis pyrogenic exotoxin B (SPE B) or GAPDH?

In this study, glomerular deposits of and antibody response to zymogen/SPE B are more consistently present in APSGN than deposits and antibody response to GAPDH. Zymogen/SPE B is likely to be the major antigen involved in the pathogenesis of most cases of APSGN.