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. 2026 Jul 29;14:1878193. doi: 10.3389/fped.2026.1878193

Table 2.

Sanger sequencing chromatogram.

Sanger sequencing validation results
Validation of variant locus information Relationship Validation results
MMACHC chr1:45974605 Exon:4/4
NM_015506.3: c.567dup (p.Ile190Tyrfs*13)
proband heterozygous duplication
father wild-type
mother heterozygous duplication
MMACHC chr1:45974647 Exon:4/4
NM_015506.3: c.609G>A (p.Trp203*)
proband heterozygous
father heterozygous
mother wild-type
Chromatogram verification results
Gene MMACHC Genomic coordinate chr1:45974605 Variant information c.567dup (p.Ile190Tyrfs*13)
Proband, Forward Sequencing
Heterozygous Duplication
graphic file with name fped-14-1878193-i001.jpg
Proband, Reverse Sequencing
Heterozygous Duplication
graphic file with name fped-14-1878193-i002.jpg
Father, Forward Sequencing
Wild-type
graphic file with name fped-14-1878193-i003.jpg
Mother, Forward Sequencing
Heterozygous Duplication
graphic file with name fped-14-1878193-i004.jpg
Chromatogram verification results
Gene MMACHC Genomic coordinate chr1:45974647 Variant information c.609G>A (p.Trp203*)
Proband, Reverse Sequencing
Heterozygous
graphic file with name fped-14-1878193-i005.jpg
Father, Reverse Sequencing
Heterozygous
graphic file with name fped-14-1878193-i006.jpg
Mother, Reverse Sequencing
Wild-type
graphic file with name fped-14-1878193-i007.jpg