rs751952525

Variant names:

• chr2-201626118-T-TG
• rs751952525
• NM_001044385.3:c.1066dupC

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_001044385.3(TMEM237):​c.1066dupC​(p.Gln356ProfsTer24) variant causes a frameshift change. The variant allele was found at a frequency of 0.0000335 in 1,611,082 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. Q356Q) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000036 (0 hom.)
• Consequence: TMEM237 NM_001044385.3 frameshift
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:5 U:1
• Conservation: PhyloP100: 4.07
• Publications: 6 publications found

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]

TMEM237 Gene-Disease associations (from GenCC):

• Joubert syndrome 14

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, G2P, PanelApp Australia, ClinGen, Labcorp Genetics (formerly Invitae)
• Joubert syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Joubert syndrome with oculorenal defect

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Joubert syndrome with renal defect

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Meckel syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 2-201626118-T-TG is Pathogenic according to our data. Variant chr2-201626118-T-TG is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 31182.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001044385.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TMEM237	NM_001044385.3	MANE Select	c.1066dupC	p.Gln356ProfsTer24	frameshift	Exon 12 of 13	NP_001037850.1	Q96Q45-1
	TMEM237	NM_152388.4		c.1042dupC	p.Gln348ProfsTer24	frameshift	Exon 12 of 13	NP_689601.2	Q96Q45-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TMEM237	ENST00000409883.7	TSL:5 MANE Select	c.1066dupC	p.Gln356ProfsTer24	frameshift	Exon 12 of 13	ENSP00000386264.2	Q96Q45-1
	TMEM237	ENST00000621467.5	TSL:1	c.940dupC	p.Gln314ProfsTer24	frameshift	Exon 12 of 13	ENSP00000480508.2	A0A087WWU1
	TMEM237	ENST00000409444.6	TSL:5	c.1042dupC	p.Gln348ProfsTer24	frameshift	Exon 12 of 13	ENSP00000387203.2	Q96Q45-2

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152118 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000205 AC: 5 AN: 244030 AF XY: 0.0000303

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000295

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000362

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000363 AC: 53 AN: 1458964 Hom.: 0 Cov.: 30 AF XY: 0.0000290 AC XY: 21 AN XY: 725342

African (AFR) AF: 0.00 AC: 0 AN: 33424

American (AMR) AF: 0.0000225 AC: 1 AN: 44502

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26062

East Asian (EAS) AF: 0.00 AC: 0 AN: 39672

South Asian (SAS) AF: 0.00 AC: 0 AN: 85376

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53290

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5760

European-Non Finnish (NFE) AF: 0.0000468 AC: 52 AN: 1110598

Other (OTH) AF: 0.00 AC: 0 AN: 60280

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152118 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 74304

African (AFR) AF: 0.00 AC: 0 AN: 41416

American (AMR) AF: 0.00 AC: 0 AN: 15272

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000302

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
5	1	-	Joubert syndrome 14 (6)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		4.1
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs751952525; hg19: chr2-202490841;