CSTF2 and pachyonychia congenita: Also, Univariate Cox analysis showed that 10 of 26 writers (CSTF2, CPSF4, METTL3, NUDT21, ADARB2, PABPN1, CPSF1, VIRMA, METTL14 and CFI) were independent prognostic factors in PC patients (Figure S3B).