Related Experiment Video
Updated: Mar 25, 2026

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
Published on: August 20, 2019
De Novo Mutation in ABCC9 Causes Hypertrichosis Acromegaloid Facial Features Disorder
Hanan H Afifi1, Mohamed S Abdel-Hamid2, Maha M Eid3
1Clinical Genetics Department, National Research Centre, Cairo, Egypt.
Abstract:
A 13-year-old Egyptian girl with generalized hypertrichosis, gingival hyperplasia, coarse facial appearance, no cardiovascular or skeletal anomalies, keloid formation, and multiple labial frenula was referred to our clinic for counseling. Molecular analysis of the ABCC9 gene showed a de novo missense mutation located in exon 27, which has been described previously with Cantu syndrome. An overlap between Cantu syndrome, acromegaloid facial syndrome, and hypertrichosis acromegaloid facial features disorder is apparent at the phenotypic and molecular levels. The patient reported here gives further evidence that these syndromes are an expression of the ABCC9-related disorders, ranging from hypertrichosis and acromegaloid facies to the severe end of Cantu syndrome.
More Related Videos
Related Concept Videos
Pleiotropy
X-linked Traits
X-linked Traits
Lethal Alleles
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon...
Abnormal Proliferation

