Mutation analysis of the LMNA gene in a child with Hutchinson-Gifford progeria syndrome
10.3760/cma.j.issn.0412-4030.2014.07.004
- VernacularTitle:Hutchinson-Gilford早老综合征LMNA基因突变研究
- Author:
Fang YANG
;
Qian LI
;
Lixiong ZHENG
;
Sihang FENG
;
Sining FANG
;
Yongfeng YAO
- Publication Type:Journal Article
- Keywords:
Progeria;
Molecular diagnostic techniques;
LMNA
- From:
Chinese Journal of Dermatology
2014;47(7):465-468
- CountryChina
- Language:Chinese
-
Abstract:
Objective To report a case of Hutchinson-Gilford progeria syndrome,and to make a molecular genetic diagnosis.Methods Peripheral blood samples were collected from a 12-month-old child with HutchinsonGilford progeria syndrome,his parents,and 150 unrelated healthy controls.DNA was extracted from these samples,and PCR was performed to amplify exon 11 of the LMNA gene and its flanking sequence followed by sequencing.Results The patient presented with scleroderma-like tight skin on the trunk,hair loss and prominent scalp veins for 9 months,whose body height and weight were two standard deviations below the mean.Physical examination showed thin skin and prominent superficial veins over the scalp.The skin over the trunk was tight,hard,shiny and dry with a small number of tiny scales,mottled pigmentation and hypopigmentation,induration and hypertrophy giving a cobblestone-like appearance.The subcutaneous fat was diminished on the lower limbs.Skeletal X-ray examination of the left hand revealed phalangeal acroosteolysis.A known heterozygous mutation c.1824C ＞ T (dbSNP:rs58596362) was detected in the exon 11 of the LMNA gene in the proband,but not in his parents or the 150 unrelated healthy controls.Conclusion The mutation c.1824C ＞T in the LMNA gene may be responsible for Hutchinson-Gilford progeria syndrome in this patient.
