CENPT and isolated growth hormone deficiency type IA: To identify additional affected individuals, 59 patients with matching HPO terms (microcephaly, microcephaly and short stature, primordial dwarfism) or ICD-9 codes from various institutions (University of Miami, Vanderbilt University, University of Edinburgh) were screened for CENPT variants by Sanger sequencing of all CENPT exons and exon/intron boundaries (GenBank: NM_025082.3).