12-109916731-C-T

Variant names:

• chr12-109916731-C-T
• rs17680262
• NM_001143852.2:c.*108C>T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001143852.2(TCHP):​c.*108C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0754 in 1,035,628 control chromosomes in the GnomAD database, including 3,585 homozygotes. 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: 𝑓 0.055 (328 hom., cov: 33)
  • Exomes 𝑓: 0.079 (3257 hom.)
• Consequence: TCHP NM_001143852.2 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -3.21

Genes affected

TCHP (HGNC:28135): (trichoplein keratin filament binding) Involved in apoptotic process; negative regulation of cell growth; and negative regulation of cilium assembly. Located in several cellular components, including apical cortex; cytoskeleton; and mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0852 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TCHP	NM_001143852.2	c.*108C>T		3_prime_UTR_variant	Exon 13 of 13	ENST00000405876.9	NP_001137324.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TCHP	ENST00000405876.9	c.*108C>T		3_prime_UTR_variant	Exon 13 of 13	1	NM_001143852.2	ENSP00000384520.4

Frequencies

GnomAD3 genomes AF: 0.0553 AC: 8422 AN: 152188 Hom.: 328 Cov.: 33

Gnomad AFR AF: 0.0163

Gnomad AMI AF: 0.0581

Gnomad AMR AF: 0.0446

Gnomad ASJ AF: 0.0323

Gnomad EAS AF: 0.000385

Gnomad SAS AF: 0.0168

Gnomad FIN AF: 0.0732

Gnomad MID AF: 0.0253

Gnomad NFE AF: 0.0871

Gnomad OTH AF: 0.0530

GnomAD4 exome AF: 0.0789 AC: 69715 AN: 883322 Hom.: 3257 Cov.: 11 AF XY: 0.0765 AC XY: 34903 AN XY: 456056

Gnomad4 AFR exome AF: 0.0126

Gnomad4 AMR exome AF: 0.0294

Gnomad4 ASJ exome AF: 0.0422

Gnomad4 EAS exome AF: 0.000169

Gnomad4 SAS exome AF: 0.0197

Gnomad4 FIN exome AF: 0.0824

Gnomad4 NFE exome AF: 0.0959

Gnomad4 OTH exome AF: 0.0665

GnomAD4 genome AF: 0.0553 AC: 8419 AN: 152306 Hom.: 328 Cov.: 33 AF XY: 0.0532 AC XY: 3961 AN XY: 74472

Gnomad4 AFR AF: 0.0163

Gnomad4 AMR AF: 0.0445

Gnomad4 ASJ AF: 0.0323

Gnomad4 EAS AF: 0.000386

Gnomad4 SAS AF: 0.0168

Gnomad4 FIN AF: 0.0732

Gnomad4 NFE AF: 0.0870

Gnomad4 OTH AF: 0.0520

Alfa AF: 0.0758 Hom.: 653

Bravo AF: 0.0507

Asia WGS AF: 0.00838 AC: 29 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.092
DANN	Benign	0.39

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs17680262; hg19: chr12-110354536;