Fig. 3From: Upper limb muscle overgrowth with hypoplasia of the index finger: a new over-growth syndrome caused by the somatic PIK3CA mutation c.3140A>GExamples of chromatograms obtained from patients’ blood (top) and muscle biopsies (bottom). The arrow indicates the somatic mutation (bottom) nucleotide and amino acid change within the PIK3CA gene at exon20 (c.3140A>G, p.His1047Arg)Back to article page