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Psychology

University of South Carolina

Faculty Publications

2018

Low-normal CGG repeats

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Curvilinear Association Between Language Disfluency And Fmr1 Cgg Repeat Size Across The Normal, Intermediate, And Premutation Range, Jessica Klusek, Ann Porter, Leonard Abbeduto, Tatyana Adayev, Flora Tassone, Marsha R. Mailick, Anne Glicksman, Bridgette L. Tonnsen, Jane E. Roberts Aug 2018

Curvilinear Association Between Language Disfluency And Fmr1 Cgg Repeat Size Across The Normal, Intermediate, And Premutation Range, Jessica Klusek, Ann Porter, Leonard Abbeduto, Tatyana Adayev, Flora Tassone, Marsha R. Mailick, Anne Glicksman, Bridgette L. Tonnsen, Jane E. Roberts

Faculty Publications

Historically, investigations of FMR1 have focused almost exclusively on the clinical effects of CGG expansion within the categories of the premutation (55–200 CGG repeats) and fragile X syndrome (>200 CGG repeats). However, emerging evidence suggests that CGG-dependent phenotypes may occur across allele sizes traditionally considered within the “normal” range. This study adopted an individual-differences approach to determine the association between language production ability and CGG repeat length across the full range of normal, intermediate, and premutation alleles. Participants included 61 adult women with CGG repeats within the premutation (n = 37), intermediate (i.e., 41–54 repeats; n = 2), …