Figure legends
Figure 1: The twelve specific exons screened across the three genes implicated in stuttering
Figure 2a: Distribution of the variants identified in the three putative genes (GNPTAB , GNPTG and NAGPA ) among the 64 probands with stuttering. Read clockwise starting with 12 O’ clock position. Note: Since some probands showed more than one variant the total sample size (64) will not tally.
Figure 2b: Distribution of the variants identified in the three putative genes for stuttering
Figure 3: Partial chromatograms of the p.Glu1200Lys mutation (GNPTAB ) segregating in a family with stuttering
Figure 4: Partial chromatogram of c.802A>C (p.Ile268Leu) variation in GNPTG gene
Figure 5: Partial chromatogram of c.131G>C (p.Arg44Pro) mutation in NAGPA gene
Figure 6: The relative levels of GNPTG, GNPTAB, and NAGPA mRNA expression were determined in WBC from blood sample of stuttering patients by real-time PCR normalized to β-actin expression. Data indicates ∆Ct values ±SD