objectives: familial adenomatous polyposis (fap) is an autosomal dominant predisposition to colon cancer. this hereditary genetic disease is characterized by more than 100 adenomatous polyps in colon and rectum. additional features may include desmoids tumors, polyps in the upper gastrointestinal tract, osteomas and congenital hypertrophy of the retinal pigment epithelium (chrpe). a mutation in...

hearing loss (hl) is the most common sensory defect. various genetic as well as environmental factors have been shown to contribute in it. more than 100 loci have been recognized to cause autosomal recessive nonsyndromic hearing loss (arnshl). here, we report a 6-year old female patient with bilateral pre-lingual hl in whom a mutation has been identified in triobp gene (c.6362c>t, s2121l). in s...

pelizaeus­-merzbacher-like disease (pmld) is a hypomyelinating leukoencephalopathy disorder with a genetically heterogeneous pattern. mutations in the gja12/gjc2 gene cause one form of autosomal recessive pelizaeus­-merzbacher-like disease. here, we report a new mutation in a ­10-month-old girl with nystagmus, psychomotor delay, hypotonicity, head nodding and dysmyelination from healthy second ...

chronic granulomatous disease (cgd) is a rare primary immunodeficiency disorder due to a genetic defect in one of the components of nicotinamide adenine dinucleotide phosphate (nadph) oxidase complex. this complex is composed of membrane-bound gp91- phox and p22- phox subunits, and cytosolic subunits consisting of p47- phox , p67- phox , and p40- phox . a mutation in cybb gene encoding gp91- ph...

Hydatidiform moles are the most common type of gestational trophoblastic neoplasia. Hyperproliferative vesicular trophoblasts and imperfect fetal development abnormal pregnancies, recurrent hydatidiform rare. Mutations in NLRP7 responsible for mole. Genetic heterogeneity has been demonstrated patients with mutation. This study presents our case gravida 11, parity 0, histopathologically diagnose...

introduction oculocutaneous albinism (oca) is a genetically heterogeneous autosomal recessive genetic disorder that is characterized by reduced or completely absent pigmentation in the hair, skin, and eyes. conclusions a novel homozygous mutation, the deletion of exons 1 - 5 on the tyr gene, was found on the molecular genetic testing of this patient. exon 1 - 5 deletion on tyr causes a lack of ...