Monarch Disease Ontology id MONDO_0018133 (attenuated Chédiak-Higashi syndrome) (CHS) is a very rare and atypical form of CHS, a genetic disorder characterized by partial oculocutaneous albinism (OCA), severe immunodeficiency, mild bleeding, neurological dysfunction and lymphoproliferative disorder. Also known as: attenuated Chediak-Higashi syndrome, atypical Chediak-Higashi syndrome, atypical Chédiak-Higashi syndrome.