Carcinoma, and Micropenis

Choroid plexus tumors are of neuroectodermal origin and range from benign choroid plexus papillomas (CPPs) to malignant choroid carcinomas (CPCs). These rare tumors generally occur in childhood, but have also been reported in adults. Patients typically present with signs and symptoms of increased intracranial pressure including headache, hydrocephalus, papilledema, nausea, vomiting, cranial nerve deficits, gait impairment, and seizures (summary by Safaee et al., 2013).

PAPILLOMA OF CHOROID PLEXUS; CPP Is also known as choroid plexus papilloma

• Intellectual disability
• Seizures
• Hypertelorism
• Neoplasm
• Abnormal facial shape

SOURCES: OMIM MENDELIAN

Werner syndrome (WS) is a rare inherited syndrome characterized by premature aging with onset in the third decade of life and with cardinal clinical features including bilateral cataracts, short stature, graying and thinning of scalp hair, characteristic skin disorders and premature onset of additional age-related disorders.

WERNER SYNDROME Is also known as ws|adult progeria

• Short stature
• Neoplasm
• Pain
• Cataract
• Visual impairment

SOURCES: MESH ORPHANET OMIM MENDELIAN

BLEPHAROPHIMOSIS-INTELLECTUAL DISABILITY SYNDROME, MKB TYPE Is also known as bmrs, mkb type|bmrs, maat-kievit-brunner type|blepharophimosis-intellectual disability syndrome, maat-kievit-brunner type|blepharophimosis-mental retardation syndrome, maat-kievit-brunner type|x-linked ohdo syndrome

• Intellectual disability
• Global developmental delay
• Hearing impairment
• Micrognathia
• Cryptorchidism

SOURCES: ORPHANET OMIM MENDELIAN

Palmoplantar keratoderma-XX sex reversal-predisposition to squamous cell carcinoma syndrome is characterised by sex reversal in males with a 46, XX (SRY-negative) karyotype, palmoplantar hyperkeratosis and a predisposition to squamous cell carcinoma. To date, five cases (four of whom were brothers) have been described. The aetiology is unknown.

PALMOPLANTAR KERATODERMA-XX SEX REVERSAL-PREDISPOSITION TO SQUAMOUS CELL CARCINOMA SYNDROME Is also known as palmoplantar hyperkeratosis-xx sex reversal-predisposition to squamous cell carcinoma syndrome

• Hearing impairment
• Strabismus
• Hypospadias
• Hyperkeratosis
• Carcinoma

SOURCES: OMIM ORPHANET MESH MENDELIAN

Xeroderma pigmentosum (XP) is a rare genodermatosis characterized by extreme sensitivity to ultraviolet (UV)-induced changes in the skin and eyes, and multiple skin cancers. It is subdivided into 8 complementation groups, according to the affected gene: classical XP (XPA to XPG) and XP variant (XPV) (see these terms).

XERODERMA PIGMENTOSUM Is also known as xeroderma pigmentosum i|xp1|xp, group a|xp

• Intellectual disability
• Seizures
• Short stature
• Hearing impairment
• Microcephaly

SOURCES: OMIM ORPHANET MENDELIAN

Hoyeraal-Hreidarsson syndrome (HHS) is a very rare X-linked recessive disorder considered to be a severe variant of dyskeratosis congenita (see this term) characterized by intrauterine growth retardation, microcephaly, cerebellar hypoplasia, progressive combined immune deficiency and aplastic anemia.

HOYERAAL-HREIDARSSON SYNDROME Is also known as progressive pancytopenia-immunodeficiency-cerebellar hypoplasia syndrome|zinsser-cole-engman syndrome

• Intellectual disability
• Seizures
• Global developmental delay
• Short stature
• Generalized hypotonia

SOURCES: ORPHANET OMIM MENDELIAN

Costello syndrome (CS) is a rare multisystemic disorder characterized by failure to thrive, short stature, developmental delay or intellectual disability, joint laxity, soft skin, and distinctive facial features. Cardiac and neurological involvement is common and there is an increased lifetime risk of certain tumors.

COSTELLO SYNDROME Is also known as fcs syndrome|faciocutaneoskeletal syndrome

• Intellectual disability
• Seizures
• Global developmental delay
• Short stature
• Generalized hypotonia

SOURCES: MESH OMIM ORPHANET MENDELIAN

Congenital adrenal hyperplasia (CAH) results from a deficiency in one or another of the enzymes of cortisol biosynthesis. In about 95% of cases, 21-hydroxylation is impaired in the zona fasciculata of the adrenal cortex so that 17-hydroxyprogesterone (17-OHP) is not converted to 11-deoxycortisol. Because of defective cortisol synthesis, ACTH levels increase, resulting in overproduction and accumulation of cortisol precursors, particularly 17-OHP, proximal to the block. This causes excessive production of androgens, resulting in virilization.Slominski et al. (1996) presented evidence that the CYP21A2, CYP11A1 (OMIM ), CYP17 (OMIM ), and ACTHR (OMIM ) genes are expressed in skin (see {202200}). The authors suggested that expression of these genes may play a role in skin physiology and pathology and that cutaneous proopiomelanocortin activity may be autoregulated by a feedback mechanism involving glucocorticoids synthesized locally.

ADRENAL HYPERPLASIA, CONGENITAL, DUE TO 21-HYDROXYLASE DEFICIENCY Is also known as cyp21 deficiency|21-hydroxylase deficiency|congenital adrenal hyperplasia 1|cah1|adrenal hyperplasia iii

• Short stature
• Neoplasm
• Hypertension
• Fever
• Obesity

SOURCES: OMIM MENDELIAN

Ornithine transcarbamylase deficiency is an X-linked inborn error of metabolism of the urea cycle which causes hyperammonemia. The disorder is treatable with supplemental dietary arginine and low protein diet.Urea cycle disorders are characterized by the triad of hyperammonemia, encephalopathy, and respiratory alkalosis. Five disorders involving different defects in the biosynthesis of the enzymes of the urea cycle have been described: OTC deficiency, carbamyl phosphate synthetase deficiency (OMIM ), argininosuccinate synthetase deficiency, or citrullinemia (OMIM ), argininosuccinate lyase deficiency (OMIM ), and arginase deficiency (OMIM ).

ORNITHINE TRANSCARBAMYLASE DEFICIENCY, HYPERAMMONEMIA DUE TO Is also known as ornithine carbamoyltransferase deficiency|otc deficiency

• Intellectual disability
• Seizures
• Global developmental delay
• Ataxia
• Growth delay

SOURCES: ORPHANET OMIM MENDELIAN

Hereditary hemochromatosis is an autosomal recessive disorder of iron metabolism wherein the body accumulates excess iron (summary by Feder et al., 1996). Excess iron is deposited in a variety of organs leading to their failure, and resulting in serious illnesses including cirrhosis, hepatomas, diabetes, cardiomyopathy, arthritis, and hypogonadotropic hypogonadism. Severe effects of the disease usually do not appear until after decades of progressive iron loading. Removal of excess iron by therapeutic phlebotomy decreases morbidity and mortality if instituted early in the course of the disease. Classic hemochromatosis (HFE) is most often caused by mutation in a gene designated HFE on chromosome 6p21.3.Adams and Barton (2007) reviewed the clinical features, pathophysiology, and management of hemochromatosis. Genetic Heterogeneity of HemochromatosisAt least 4 additional iron overload disorders labeled hemochromatosis have been identified on the basis of clinical, biochemical, and genetic characteristics. Juvenile hemochromatosis, or hemochromatosis type 2 (HFE2), is autosomal recessive and is divided into 2 forms: HFE2A (OMIM ), caused by mutation in the HJV gene (OMIM ) on chromosome 1q21, and HFE2B (OMIM ), caused by mutation in the HAMP gene (OMIM ) on chromosome 19q13. Hemochromatosis type 3 (HFE3 ), an autosomal recessive disorder, is caused by mutation in the TFR2 gene (OMIM ) on chromosome 7q22. Hemochromatosis type 4 (HFE4 ), an autosomal dominant disorder, is caused by mutation in the SLC40A1 gene (OMIM ) on chromosome 2q32. Hemochromatosis type 5 (HFE5 ) is caused by mutation in the FTH1 gene (OMIM ) on chromosome 11q12.

HEMOCHROMATOSIS, TYPE 1; HFE1 Is also known as hfe|hemochromatosis, hereditary|hemochromatosis|hh

• Ataxia
• Neoplasm
• Pain
• Anemia
• Hepatomegaly

SOURCES: ORPHANET OMIM MENDELIAN