These features included both positive and negative symptoms, as well as cognitive dysfunction in healthy volunteers.5 In addition, PCP exacerbated these symptoms in patients with chronic SCZ.12 Further, GRIN2A, which encodes the NR2A subunit of NMDARs, has been consistently reported to be associated with SCZ 9–11 and has reached genome-wide significance in the largest genome-wide association study (GWAS) performed by the Psychiatric Genomics Consortium.13 This evidence concerns the gene GRIN2A and pneumocystosis.