The currently recognized features are cerebellar hypoplasia, immunodeficiency, progressive bone marrow failure, and intrauterine growth restriction. Patients also commonly exhibit symptoms such as microcephaly, aplastic anemia, and intellectual disability. Overlap with dyskeratosis congenita Patients with<unk>  frequently present with the mucocutaneous triad of nail dysplasia, lacy skin pigmentation, and oral leukoplakia.
Hoyeraal–Hreidarsson syndrome
Wallis–Zieff–Goldblatt syndrome
Bogart–Bacall syndrome
Renpenning's syndrome
Arakawa's syndrome II
Young–Simpson syndrome
Michels Caskey syndrome
Havana syndrome