label: AFF2 (ALF transcription elongation factor 2 [FMR2]) (eg, fragile X intellectual disability 2 [FRAXE]) gene analysis; evaluation to detect abnormal (eg, expanded) alleles
label_lc: aff2 (alf transcription elongation factor 2 [fmr2]) (eg, fragile x intellectual disability 2 [fraxe]) gene analysis; evaluation to detect abnormal (eg, expanded) alleles