We performed an exhaustive search of the literature using the PubMed and Chinese journals database (Wanfang Data) to compile clinical data on individuals with DEE93 (Table S1) using the following keywords: “ATP6V1A, DEE and Developmental and epileptic encephalopathy” or “DEE93.” Thirty-one patients with ATP6V1A pathogenic variants have been described in five articles (including 22 boys and nine girls), of whom 29 were sporadic and two were monozygotic twins, and all reported pathogenic variants were missense mutations. The gene discussed is ATP6V1A; the disease is developmental and epileptic encephalopathy.