It should also be noted that individuals with Prader-Willi Syndrome (PWS) as a result of maternal uniparental disomy (i.e. two maternal copies of 15 and thus no paternal specific expression at the SNRPN locus) have also been reported as having more autism like features than PWS deletion individuals [18]. The gene discussed is SNRPN; the disease is Prader-Willi syndrome.