chr2-201640278-A-G

Variant names:

• chr2-201640278-A-G
• rs116829037
• NM_001044385.3:c.75-13T>C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_001044385.3(TMEM237):​c.75-13T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00124 in 1,552,422 control chromosomes in the GnomAD database, including 25 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0070 (9 hom., cov: 33)
  • Exomes 𝑓: 0.00061 (16 hom.)
• Consequence: TMEM237 NM_001044385.3 intron
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: 0.211

Genes affected

TMEM237 (HGNC:14432): (transmembrane protein 237) The protein encoded by this gene is a tetraspanin protein that is thought to be involved in WNT signaling. Defects in this gene are a cause of Joubert syndrome-14. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2012]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 2-201640278-A-G is Benign according to our data. Variant chr2-201640278-A-G is described in ClinVar as [Benign]. Clinvar id is 196307.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00703 (1071/152358) while in subpopulation AFR AF= 0.0247 (1026/41582). AF 95% confidence interval is 0.0234. There are 9 homozygotes in gnomad4. There are 524 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 9 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM237	NM_001044385.3	c.75-13T>C		intron_variant	Intron 2 of 12	ENST00000409883.7	NP_001037850.1
TMEM237	NM_152388.4	c.51-13T>C		intron_variant	Intron 2 of 12		NP_689601.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMEM237	ENST00000409883.7	c.75-13T>C		intron_variant	Intron 2 of 12	5	NM_001044385.3	ENSP00000386264.2

Frequencies

GnomAD3 genomes AF: 0.00704 AC: 1072 AN: 152240 Hom.: 9 Cov.: 33

Gnomad AFR AF: 0.0248

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00150

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000103

Gnomad OTH AF: 0.00669

GnomAD3 exomes AF: 0.00177 AC: 354 AN: 199826 Hom.: 3 AF XY: 0.00136 AC XY: 149 AN XY: 109952

Gnomad AFR exome AF: 0.0241

Gnomad AMR exome AF: 0.00154

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000435

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000202

Gnomad OTH exome AF: 0.000207

GnomAD4 exome AF: 0.000612 AC: 857 AN: 1400064 Hom.: 16 Cov.: 28 AF XY: 0.000532 AC XY: 370 AN XY: 695448

Gnomad4 AFR exome AF: 0.0228

Gnomad4 AMR exome AF: 0.00151

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000270

Gnomad4 SAS exome AF: 0.0000395

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000101

Gnomad4 OTH exome AF: 0.00125

GnomAD4 genome AF: 0.00703 AC: 1071 AN: 152358 Hom.: 9 Cov.: 33 AF XY: 0.00703 AC XY: 524 AN XY: 74516

Gnomad4 AFR AF: 0.0247

Gnomad4 AMR AF: 0.00150

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000103

Gnomad4 OTH AF: 0.00662

Alfa AF: 0.00363 Hom.: 1

Bravo AF: 0.00801

Asia WGS AF: 0.000577 AC: 2 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:2

-

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 14, 2015

Eurofins Ntd Llc (ga)

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Joubert syndrome 14 Benign:2

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided Benign:1

Mar 03, 2015

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	8.0
DANN	Benign	0.51
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		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: rs116829037; hg19: chr2-202505001;