Non-deletional alpha thalassaemia: a review
نویسندگان
چکیده
منابع مشابه
Alpha thalassaemia/mental retardation syndrome (non-deletional type): report of a family supporting X linked inheritance.
In 1990 the existence of an X linked form of the alpha thalassaemia/mental retardation syndrome was postulated after the description of six isolated cases who were all cytogenetically male. The segregation pattern in the family described here supports X linked inheritance. The clinical details of our two patients are remarkably similar to the previously delineated phenotype. In addition, renal ...
متن کاملX linked mental retardation with non-deletional alpha thalassaemia (ATR-X): further delineation of the phenotype.
Two sibs with non-deletional alpha thalassaemia and mental retardation (ATR-X) have been ascertained showing variable neurological features. The proband had a complex neurological picture with recurrent apnoea, complex partial seizures, and prolonged periods of semiconsciousness between 12 and 17 months of age. Episodes of spontaneous laughter were also a feature. An EEG was initially normal. H...
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The rare association of alpha thalassaemia and mental retardation has been described previously. Molecular studies of the alpha globin cluster in these cases have been heterogeneous, with some patients having large deletions while in others the alpha globin complex appears to be intact (non-deletional). The non-deletional cases form a distinct group whose features include severe mental retardat...
متن کاملAlpha thalassaemia-mental retardation, X linked
X-linked alpha thalassaemia mental retardation (ATR-X) syndrome in males is associated with profound developmental delay, facial dysmorphism, genital abnormalities and alpha thalassaemia. Female carriers are usually physically and intellectually normal. So far, 168 patients have been reported. Language is usually very limited. Seizures occur in about one third of the cases. While many patients ...
متن کاملAlpha thalassaemia and extended alpha globin genes in Sri Lanka.
The α-globin genes were studied in nine families with unexplained hypochromic anaemia and in 167 patients with HbE β thalassaemia in Sri Lanka. As well as the common deletion forms of α(+) thalassaemia three families from an ethnic minority were found to carry a novel form of α(0) thalassaemia, one family carried a previously reported form of α(0) thalassaemia, --(THAI), and five families had d...
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ژورنال
عنوان ژورنال: Orphanet Journal of Rare Diseases
سال: 2020
ISSN: 1750-1172
DOI: 10.1186/s13023-020-01429-1