What is Bloom syndrome?
Listen to pronunciation. (… SIN-drome) A rare, inherited disorder marked by shorter than average height, a narrow face, a red skin rash that occurs on sun-exposed areas of the body, and an increased risk of cancer.
What is Nijmegen breakage syndrome?
Collapse Section. Nijmegen breakage syndrome is a condition characterized by short stature, an unusually small head size (microcephaly ), distinctive facial features, recurrent respiratory tract infections, an increased risk of cancer, intellectual disability, and other health problems.
What is NBS disease?
Abstract. Nijmegen breakage syndrome (NBS) is a rare autosomal recessive syndrome of chromosomal instability mainly characterized by microcephaly at birth, combined immunodeficiency and predisposition to malignancies.
What causes Trichothiodystrophy?
What causes trichothiodystrophy? Trichothiodystrophy is caused by defective DNA repair and transcription and is inherited in an autosomal recessive pattern, meaning both parents must carry a copy of the mutated gene that causes trichothiodystrophy for a child to inherit the condition.
At what age is Bloom syndrome diagnosed?
Chronic Obstructive Lung Disease As reported in 1997, seven of the 168 individuals in the Bloom’s Syndrome Registry have had chronic lung disease, with a mean age at diagnosis of 25 years (range 11-40) [German, 1997].
Which of the following is associated with ataxia-telangiectasia?
People with ataxia-telangiectasia often have a weakened immune system, and many develop chronic lung infections. They also have an increased risk of developing cancer, particularly cancer of blood-forming cells (leukemia ) and cancer of immune system cells (lymphoma ).
What are the symptoms of Trichothiodystrophy?
Trichothiodystrophy is a rare, multisystem, autosomal-recessive disorder characterised by sulphur-deficient, short, brittle hair. Other clinical features may include photosensitivity, ichthyosis, intellectual impairment, haematological abnormalities, decreased fertility, and short stature [1].
How common is Trichothiodystrophy?
Trichothiodystrophy has an estimated incidence of about 1 in 1 million newborns in the United States and Europe. About 100 affected individuals have been reported worldwide.