Predicted to be involved in positive regulation of megakaryocyte differentiation and positive regulation of transcription, DNA-templated. Predicted to act upstream of or within regulation of proteasomal protein catabolic process; single fertilization; and spermatid development. Predicted to be located in sperm cytoplasmic droplet. Predicted to be active in nucleus. Orthologous to human PITHD1 (PITH domain containing 1). [provided by Alliance of Genome Resources, Apr 2022]