Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome type 1, a form of MRKH syndrome, is an isolated form of congenital aplasia of the uterus and 2/3 of the vagina occurring in otherwise phenotypically normal females. The disease is Mayer-Rokitansky-Kuster-Hauser syndrome type 1 (Monarch Disease Ontology id MONDO_0010173). Also known as: MRKH syndrome type 1, Rokitansky sequence, congenital absence of uterus and vagina.