BACKGROUND Bloom syndrome is an autosomal recessive disorder characterized by extraordinary cancer incidence early in life and an average life expectancy of ~27 years. Premature stop codons in BLM, which encodes a DNA helicase that functions in DNA double-strand-break repair, make up the vast majority of Bloom syndrome mutations, with only 13 single amino acid changes identified in the syndrome...

Bloom syndrome is a rare autosomal recessive genetic disorder, which is characterized by telangiectasia and erythema in the butterfly area of the face, dwarfism and photosensitivity. The case presented herein is a 22-year-old man who referred with facial erythema and telangiectasia (Resembling lupus erythematosus). The skin lesions were exacerbating during summer. Other clinical findings were p...

Bloom syndrome is a rare autosomal recessive disorder characterized by genetic instability and cancer predisposition, and caused by mutations in the gene encoding the Bloom syndrome, RecQ helicase-like (BLM) protein. To determine whether altered gene expression might be responsible for pathological features of Bloom syndrome, we analyzed mRNA and microRNA (miRNA) expression in fibroblasts from ...

Aim: To describe multiple retinal abnormalities in a patient with Bloom syndrome, including early macular drusen, diabetic retinopathy, and the onset of leukaemic retinopathy. Methods: Clinical data were collected over 1 year of follow up, and ocular abnormalities in Bloom syndrome were reviewed from the literature. Results: A 39 year old man with a rare autosomal recessive ‘‘chromosome breakag...

AIM To describe multiple retinal abnormalities in a patient with Bloom syndrome, including early macular drusen, diabetic retinopathy, and the onset of leukaemic retinopathy. METHODS Clinical data were collected over 1 year of follow up, and ocular abnormalities in Bloom syndrome were reviewed from the literature. RESULTS A 39 year old man with a rare autosomal recessive "chromosome breakag...

Bloom syndrome is an extremely rare inherited disorder. We present a case of Bloom syndrome with a chromosomal study in a Mexican five-year-old patient who presented growth retardation, narrow facies with poikiloderma, café-au-lait, macules and photosensitivity.

Defects in DNA replication are associated with genetic instability and cancer development, as illustrated in Bloom syndrome. Features of this syndrome include a slowdown in replication speed, defective fork reactivation and high rates of sister chromatid exchange, with a general predisposition to cancer. Bloom syndrome is caused by mutations in the BLM gene encoding a RecQ helicase. Here we rep...

The Bloom syndrome, caused by mutations in a single gene [BLM (15q26.1)], is a rare genomic instability syndrome. Despite its autosomal recessive transmission, it shows a male dominance, suggesting the possibility of a subgroup with X-linked recessive inheritance. In view of the latest molecular developments achieved in the other genomic instability syndromes, the potential functions of the X c...

Three monoclonal antibodies that react with uracil DNA glycosylase of normal human placenta were tested to determine whether one of the antibodies could be used as a negative marker for Bloom syndrome. As defined by enzyme-linked immunosorbent assay, monoclonal antibody 40.10.09, which reacts with normal human glycosylase, neither recognized nor inhibited native uracil DNA glycosylase from any ...