Immunodeficiency 21

An immunodeficiency disease characterized by profoundly decreased or absent monocytes, B-lymphocytes, natural killer lymphocytes, and circulating and tissue dendritic cells, with little or no effect on T-cell numbers. Clinical features of DCML include susceptibility to disseminated non-tuberculous mycobacterial infections, papillomavirus infections, opportunistic fungal infections, and pulmonary alveolar proteinosis. Bone marrow hypocellularity and dysplasia of myeloid, erythroid, and megakaryocytic lineages are present in most patients, as are karyotypic abnormalities, including monosomy 7 and trisomy 8. This syndrome links susceptibility to mycobacterial, viral, and fungal infections with malignancy and can be transmitted in an autosomal dominant pattern.

Nephronophthisis 7

An autosomal recessive disorder resulting in end-stage renal disease during childhood or adolescence. It is a progressive tubulo-interstitial kidney disorder histologically characterized by modifications of the tubules with thickening of the basement membrane, interstitial fibrosis and, in the advanced stages, medullary cysts.

D-2-hydroxyglutaric aciduria 2

A neurometabolic disorder causing developmental delay, epilepsy, hypotonia, and dysmorphic features. Both a mild and a severe phenotype exist. The severe phenotype is homogeneous and is characterized by early infantile-onset epileptic encephalopathy and cardiomyopathy. The mild phenotype has a more variable clinical presentation. Diagnosis is based on the presence of an excess of D-2-hydroxyglutaric acid in the urine.

Immunodeficiency, common variable, 14

A primary immunodeficiency resulting in recurrent sinopulmonary infections since early childhood, and characterized by hypogammaglobulinemia with undetectable IgG and IgA, poor response to vaccination, and decreased levels of switched memory B cells. CVID14 inheritance is autosomal dominant.

Pierpont syndrome

An autosomal dominant syndrome characterized by multiple congenital anomalies, global developmental delay, learning disability, palmar and plantar fat pads, and distinctive facial characteristics, especially when smiling.

Growth hormone insensitivity syndrome with immune dysregulation 1, autosomal recessive

An autosomal recessive form of growth hormone insensitivity syndrome, a congenital disease characterized by short stature, growth hormone deficiency in the presence of normal to elevated circulating concentrations of growth hormone, resistance to exogeneous growth hormone therapy, and recurrent infections. Most, but not all, patients have features of immune dysregulation.

X-linked dyserythropoietic anemia and thrombocytopenia

Disorder characterized by erythrocytes with abnormal size and shape, and paucity of platelets in peripheral blood. The bone marrow contains abundant and abnormally small megakaryocytes.

Microphthalmia, syndromic, 2

A very rare multiple congenital anomaly syndrome characterized by eye anomalies (congenital cataract, microphthalmia, or secondary glaucoma), facial abnormalities (long narrow face, high nasal bridge, pointed nose with cartilages separated at the tip, cleft palate, or submucous cleft palate), cardiac anomalies (atrial septal defect, ventricular septal defect, or floppy mitral valve) and dental abnormalities (canine radiculomegaly, delayed dentition, oligodontia, persistent primary teeth, or variable root length). Microphthalmia is a disorder of eye formation, ranging from small size of a single eye to complete bilateral absence of ocular tissues (anophthalmia). In many cases, microphthalmia/anophthalmia occurs in association with syndromes that include non-ocular abnormalities.

Spinocerebellar ataxia 35

A form of spinocerebellar ataxia, a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA35 patients commonly show upper limb involvement and torticollis. There is no cognitive impairment.

Wiedemann-Steiner syndrome

A syndrome characterized by hairy elbows (hypertrichosis cubiti), intellectual disability, a distinctive facial appearance, and short stature. Facial characteristics include long eyelashes, thick or arched eyebrows with a lateral flare, and downslanting and vertically narrow palpebral fissures.

Skeletal defects, genital hypoplasia, and impaired intellectual development

A disorder characterized by intellectual disability, craniofacial dysmorphism, microcephaly and short stature. Additional features include absence of the thumbs, hypoplasia of the radii and ulnae, additional vertebrae and ribs, retarded bone age and genital hypoplasia.

Hyper-IgE syndrome 1, autosomal dominant, with recurrent infections

A rare disorder of immunity and connective tissue characterized by immunodeficiency, chronic eosinophilia, distinctive coarse facial appearance, abnormal dentition, hyperextensibility of the joints, and bone fractures.

Bone marrow failure syndrome 2

An autosomal recessive disorder characterized by trilineage bone marrow failure, bone marrow hypocellularity, learning difficulties, and microcephaly. Insufficient hematopoiesis results in peripheral blood cytopenias, affecting myeloid, erythroid and megakaryocyte lines. Cutaneous features and increased chromosome breakage are not features.

Carney complex 1

CNC is a multiple neoplasia syndrome characterized by spotty skin pigmentation, cardiac and other myxomas, endocrine tumors, and psammomatous melanotic schwannomas.

Tatton-Brown-Rahman syndrome

An overgrowth syndrome characterized by a distinctive facial appearance, tall stature and intellectual disability. Facial gestalt is characterized by a round face, heavy horizontal eyebrows and narrow palpebral fissures. Less common features include atrial septal defects, seizures, umbilical hernia, and scoliosis.

Piebald trait

Autosomal dominant genetic developmental abnormality of pigmentation characterized by congenital patches of white skin and hair that lack melanocytes.

Leukemia, acute myelogenous

A subtype of acute leukemia, a cancer of the white blood cells. AML is a malignant disease of bone marrow characterized by maturational arrest of hematopoietic precursors at an early stage of development. Clonal expansion of myeloid blasts occurs in bone marrow, blood, and other tissue. Myelogenous leukemias develop from changes in cells that normally produce neutrophils, basophils, eosinophils and monocytes.

Leukemia, acute myelogenous

A subtype of acute leukemia, a cancer of the white blood cells. AML is a malignant disease of bone marrow characterized by maturational arrest of hematopoietic precursors at an early stage of development. Clonal expansion of myeloid blasts occurs in bone marrow, blood, and other tissue. Myelogenous leukemias develop from changes in cells that normally produce neutrophils, basophils, eosinophils and monocytes.

Leukemia, acute myelogenous

A subtype of acute leukemia, a cancer of the white blood cells. AML is a malignant disease of bone marrow characterized by maturational arrest of hematopoietic precursors at an early stage of development. Clonal expansion of myeloid blasts occurs in bone marrow, blood, and other tissue. Myelogenous leukemias develop from changes in cells that normally produce neutrophils, basophils, eosinophils and monocytes.