A recent small study noted concurrent BRAF V600E mutation and CTNNB1 alterations in 2 of 14 ACP cases (21), but this finding has not yet been replicated, and a follow-up study done specifically to address this question identified BRAF mutations in 33 of 33 PCP cases and 0 of 79 ACP cases (10). Here, CTNNB1 is linked to pneumocystosis.