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The development of four unselected 47,XYY boys
Author(s) -
Bender Bruce G.,
Puck Mary H.,
Salbenblatt James A.,
Robinson Arthur
Publication year - 1984
Publication title -
clinical genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.543
H-Index - 102
eISSN - 1399-0004
pISSN - 0009-9163
DOI - 10.1111/j.1399-0004.1984.tb02013.x
Subject(s) - pediatrics , vulnerability (computing) , medicine , depression (economics) , learning disorders , karyotype , psychology , developmental psychology , chromosome , learning disability , genetics , biology , computer security , computer science , economics , macroeconomics , gene
Four infants identified through neonatal screening programs are an unselected sample of 47,XYY boys. No consistent physical stigmata or medical disorders were identified. Three have increased height. All four demonstrated problems in motor and language development. Although their intelligence is within the average range, all four have language‐related learning disorders requiring special education. Mild depression was apparent in all four, perhaps as a secondary result of their learning disorders. Some of the problems seen in the propositi are found in milder forms in other family members, leading to the hypothesis that their karyotype may heighten vulnerability to pre‐existing familial conditions. Similarities between these findings and results from seven other study centers with a total of 42 47,XYY boys are noted. Parents of a prenatally diagnosed 47,XYY fetus seen in our center are informed that the extra Y chromosome represents a risk factor for these problems, but that environment remains a primary force in shaping their child's development.