Rare Diseases Symptoms Automatic Extraction

A comprehensive study of oculocutaneous albinism type 1 reveals three previously unidentified alleles on the TYR gene.

[oculocutaneous albinism]

Oculocutaneous albinism (OCA) is a congenital genetic disorder characterized by defects in melanin production. OCA type 1 (OCA1) is the most serious and common type of OCA. This study characterized mutations associated with OCA1 in a series of Chinese patients.We recruited 41 unrelated patients with OCA and 100 healthy subjects from the Chinese Han population. Genomic DNA was extracted from their blood samples. Mutational analysis of tyrosinase (TYR) genes was conducted using polymerase chain reaction (PCR) and direct sequencing, specifically to test the 100 control subjects and exclude the possibility of polymorphism. Mutational analysis and bioinformatics study were performed in TYR mutations.Among the 24 (58.5%) patients with OCA1, 21 different TYR mutations were identified, including three previously unidentified alleles (PUAs): one frameshift mutation (c.216delA) and two missense mutations (A241T and N364K). The proband mutation A241T carries three possible mutations in complex OCA.The findings of this study expand current knowledge and data of mutations associated with OCA1 in China and allow us to estimate or explore the mutation spectrum and relative frequencies of the TYR gene in the Chinese population.

Diseases presenting "blood samples" symptom

  • 22q11.2 deletion syndrome
  • acute rheumatic fever
  • adrenomyeloneuropathy
  • alpha-thalassemia
  • aniridia
  • aromatase deficiency
  • benign recurrent intrahepatic cholestasis
  • canavan disease
  • classical phenylketonuria
  • cohen syndrome
  • congenital adrenal hyperplasia
  • congenital toxoplasmosis
  • cushing syndrome
  • dystrophic epidermolysis bullosa
  • epidermolysis bullosa simplex
  • erdheim-chester disease
  • erythropoietic protoporphyria
  • esophageal adenocarcinoma
  • fabry disease
  • familial mediterranean fever
  • heparin-induced thrombocytopenia
  • hirschsprung disease
  • hodgkin lymphoma, classical
  • homocystinuria without methylmalonic aciduria
  • kallmann syndrome
  • oculocutaneous albinism
  • oligodontia
  • oral submucous fibrosis
  • papillon-lefèvre syndrome
  • phenylketonuria
  • primary effusion lymphoma
  • scrub typhus
  • sneddon syndrome
  • systemic capillary leak syndrome
  • triple a syndrome
  • typhoid
  • von hippel-lindau disease
  • waldenström macroglobulinemia
  • well-differentiated liposarcoma
  • wolf-hirschhorn syndrome
  • x-linked adrenoleukodystrophy

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