12-6867521-G-C

Variant names:

• chr12-6867521-G-C
• ENST00000229270.8:c.66G>C

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_001159287.1(TPI1):​c.66G>C​(p.Pro22Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000139 in 1,444,038 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: TPI1 NM_001159287.1 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.76

Genes affected

TPI1 (HGNC:12009): (triosephosphate isomerase 1) This gene encodes an enzyme, consisting of two identical proteins, which catalyzes the isomerization of glyceraldehydes 3-phosphate (G3P) and dihydroxy-acetone phosphate (DHAP) in glycolysis and gluconeogenesis. Mutations in this gene are associated with triosephosphate isomerase deficiency. Pseudogenes have been identified on chromosomes 1, 4, 6 and 7. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2009]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.19).
• BP7: Synonymous conserved (PhyloP=1.76 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TPI1	NM_001159287.1	c.66G>C	p.Pro22Pro	synonymous_variant	Exon 1 of 7		NP_001152759.1
TPI1	NM_000365.6	c.-46G>C		upstream_gene_variant		ENST00000396705.10	NP_000356.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TPI1	ENST00000229270.8	c.66G>C	p.Pro22Pro	synonymous_variant	Exon 1 of 7	1		ENSP00000229270.4
TPI1	ENST00000613953.4	c.66G>C	p.Pro22Pro	synonymous_variant	Exon 1 of 7	1		ENSP00000484435.1
TPI1	ENST00000396705.10	c.-46G>C		upstream_gene_variant		1	NM_000365.6	ENSP00000379933.4

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 0.00000139 AC: 2 AN: 1444038 Hom.: 0 Cov.: 34 AF XY: 0.00000139 AC XY: 1 AN XY: 717012

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000181

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.19
CADD	Benign	15
DANN	Benign	0.92

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-6976685;