Jackson-Weiss Syndrome Also known as: craniosynostosis, midfacial hypoplasia, and foot abnormalities, Jackson-Weiss craniosynostosis, JWS
Jansen Type Metaphyseal Chondrodysplasia Also known as: Jansen disease, Jansen metaphyseal dysostosis, Murk Jansen type metaphyseal chondrodysplasia
Jervell and Lange-Nielsen Syndrome Also known as: autosomal recessive long QT syndrome (LQTS), cardioauditory syndrome, cardioauditory syndrome of Jervell and Lange-Nielsen, deafness, congenital, and functional heart disease, Jervell and Lange-Nielsen (JLNS), surdocardiac syndrome
Joubert Syndrome Also known as: cerebellooculorenal syndrome 1; CORS1, cerebelloparenchchymal disorder IV familial, Joubert-Bolthauser syndrome
Juberg-Marsidi Syndrome Also known as: JMS, Juberg-Marsidi intellectual disability syndrome, X-linked intellectual disability, with growth delay, deafness, microgenitalism, X-linked hypogonadism gynecomastia intellectual disability, X-linked intellectual disability-hypotonic facies syndrome 1 , Smith-Fineman-Myers syndrome, Brooks-Wisniewski-Brown syndrome
Juvenile CLN3 Disease Also known as: CLN3, CLN3-NCL, JNCL, juvenile Batten disease, juvenile neuronal ceroid lipofuscinosis , neuronal ceroid lipofuscinosis 3, Spielmeyer-Sjogren disease, Vogt-Spielmeyer disease, Vogt-Spielmeyer-Sjogren disease
Juvenile Hemochromatosis Also known as: hereditary hemochromatosis type 2, juvenile hereditary hemochromatosis, type 2 hereditary hemochromatosisSubdivisions: juvenile hemochromatosis type 2A, juvenile hemochromatosis type 2B
Juvenile Myelomonocytic Leukemia Also known as: chronic myelomonocytic leukemia of infancy, JMML, juvenile chronic myelogenous leukemia (old literature)