Bardet-Biedl syndrome (BBS) is an autosomal recessive condition characterised by rod-cone dystrophy, postaxial polydactyly, central obesity, mental retardation, hypogonadism, and renal dysfunction.

Objectives: To describe the clinical findings and natural history in 22 carriers of an R460H mutation in the transforming growth factor β receptor 2 gene (TGFβR2) from a five-generation kindred ...

Background Neurofibromatosis type 1 (NF1) is one of the most frequent genetic disorders. NF1 is caused by dominant loss-of-function pathogenic variants (PVs) of the tumour-suppressor gene NF1 , which ...

Objective: To describe the systematic analysis of constitutional de novo apparently balanced translocations in patients presenting with abnormal phenotypes, characterise the structural chromosome ...

Variations in new splicing regulatory elements are difficult to identify exclusively by sequence inspection and may result in deleterious effects on precursor (pre) mRNA splicing. These mutations can ...

Introduction CNV is a vital pathogenic factor of congenital heart disease (CHD). However, few CNVs have been reported for total anomalous pulmonary venous connection (TAPVC), which is a rare form of ...

Neurofibromatosis 1 (NF1) is a common neurocutaneous condition with an autosomal dominant pattern of inheritance. The complications are diverse and disease expression varies, even within families.

Editor—Cri du chat syndrome (CdCS) is one of the more common deletion syndromes, involving the short arm of chromosome 5, with an incidence of 1 in 50 000 live births. Classically, patients with this ...

A 13-year-old girl presented because of abnormal pubertal development. She was found to have an isochromosome of 22 in addition to a normal female chromosome complement. Investigation also showed ...

Background The clinical severity of disease in neurofibromatosis type 2 (NF2) is variable. Patients affected with a constitutional truncating NF2 mutation have severe disease, while missense mutations ...

Background Familial intestinal gastric cancer (FIGC) remains genetically unexplained and without testing/clinical criteria. Herein, we characterised the age of onset and disease spectrum of 50 FIGC ...

Editor—Silver-Russell syndrome (SRS) is characterised by severe intrauterine growth retardation (IUGR), postnatal short stature, asymmetry of the face, body, and limbs, short and incurved fifth ...