Genetics in medicine : official journal of the American College of Medical Genetics · 2016
Macrocephaly associated with the DICER1 syndrome.
СтатьяResearch Support, N.I.H., IntramuralНазвание и аннотация: Перевод в очереди
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Khan Nicholas E, Bauer Andrew J, Doros Leslie, Schultz Kris Ann P, Decastro Rosamma M, Harney Laura A, Kase Ron G, Carr Ann G, Harris Anne K, Williams Gretchen M, Dehner Louis P, Messinger Yoav H, Stewart Douglas R
Аннотация
PURPOSE: Germ-line mutations in DICER1 increase the risk of various tumors, including pleuropulmonary blastoma. Macrocephaly and symmetric overgrowth have been reported in some, but not all, patients with mosaic DICER1 RNase IIIb mutations. The prevalence of these features in individuals with constitutional germ-line DICER1 mutations is unknown.
METHODS: We analyzed prospectively collected auxology data from 67 DICER1 mutation carriers and 43 family controls. We assessed differences between groups using an exact test for proportions and generalized estimating equations for continuous dependent variables.
RESULTS: Twenty-eight DICER1 mutation carriers (42%) were macrocephalic, and none had an occipitofrontal circumference (OFC) below the third centile, which significantly differed from family controls, of whom five were macrocephalic (12%) and two had OFC below the third centile (5%) (P < 0.001). DICER1 mutation carriers were taller than familial controls after controlling for gender (P = 0.048), but similar proportions of both groups were above the 97th centile of population norms. Head circumference remained increased after adjusting for differences in height.
CONCLUSION: For the first time, we establish macrocephaly as a common finding in the DICER1 syndrome. Like some other tumor-predisposition disorders, macrocephaly may be a useful, albeit a subtle, clinical clue to the DICER1 syndrome diagnosis.Genet Med 19 2, 244-248.
METHODS: We analyzed prospectively collected auxology data from 67 DICER1 mutation carriers and 43 family controls. We assessed differences between groups using an exact test for proportions and generalized estimating equations for continuous dependent variables.
RESULTS: Twenty-eight DICER1 mutation carriers (42%) were macrocephalic, and none had an occipitofrontal circumference (OFC) below the third centile, which significantly differed from family controls, of whom five were macrocephalic (12%) and two had OFC below the third centile (5%) (P < 0.001). DICER1 mutation carriers were taller than familial controls after controlling for gender (P = 0.048), but similar proportions of both groups were above the 97th centile of population norms. Head circumference remained increased after adjusting for differences in height.
CONCLUSION: For the first time, we establish macrocephaly as a common finding in the DICER1 syndrome. Like some other tumor-predisposition disorders, macrocephaly may be a useful, albeit a subtle, clinical clue to the DICER1 syndrome diagnosis.Genet Med 19 2, 244-248.