8-93780845-A-G

Position:

• chr8-93780845-A-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_153704.6(TMEM67):​c.870-29A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00325 in 1,595,426 control chromosomes in the GnomAD database, including 153 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.018 (91 hom., cov: 32)
  • Exomes 𝑓: 0.0017 (62 hom.)
• Consequence: TMEM67 NM_153704.6 intron
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -0.0260

Genes affected

TMEM67 (HGNC:28396): (transmembrane protein 67) The protein encoded by this gene localizes to the primary cilium and to the plasma membrane. The gene functions in centriole migration to the apical membrane and formation of the primary cilium. Multiple transcript variants encoding different isoforms have been found for this gene. Defects in this gene are a cause of Meckel syndrome type 3 (MKS3) and Joubert syndrome type 6 (JBTS6). [provided by RefSeq, Nov 2008]

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.75).
• BP6: Variant 8-93780845-A-G is Benign according to our data. Variant chr8-93780845-A-G is described in ClinVar as [Benign]. Clinvar id is 126308.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0612 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TMEM67	NM_153704.6	c.870-29A>G		intron_variant		ENST00000453321.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TMEM67	ENST00000453321.8	c.870-29A>G		intron_variant		1	NM_153704.6	P1

Frequencies

GnomAD3 genomes AF: 0.0180 AC: 2743 AN: 152194 Hom.: 91 Cov.: 32

Gnomad AFR AF: 0.0633

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00537

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000147

Gnomad OTH AF: 0.0124

GnomAD3 exomes AF: 0.00456 AC: 1142 AN: 250452 Hom.: 35 AF XY: 0.00342 AC XY: 464 AN XY: 135612

Gnomad AFR exome AF: 0.0641

Gnomad AMR exome AF: 0.00292

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000131

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000794

Gnomad OTH exome AF: 0.00181

GnomAD4 exome AF: 0.00169 AC: 2441 AN: 1443114 Hom.: 62 Cov.: 28 AF XY: 0.00144 AC XY: 1033 AN XY: 718712

Gnomad4 AFR exome AF: 0.0619

Gnomad4 AMR exome AF: 0.00327

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000140

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000337

Gnomad4 OTH exome AF: 0.00329

GnomAD4 genome AF: 0.0180 AC: 2744 AN: 152312 Hom.: 91 Cov.: 32 AF XY: 0.0172 AC XY: 1281 AN XY: 74466

Gnomad4 AFR AF: 0.0632

Gnomad4 AMR AF: 0.00536

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000147

Gnomad4 OTH AF: 0.0123

Alfa AF: 0.00928 Hom.: 7

Bravo AF: 0.0205

Asia WGS AF: 0.00260 AC: 10 AN: 3476

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:2

Likely benign, no assertion criteria provided	clinical testing	Genetic Services Laboratory, University of Chicago	-	Likely benign based on allele frequency in 1000 Genomes Project or ESP global frequency and its presence in a patient with a rare or unrelated disease phenotype. NOT Sanger confirmed. -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Sep 26, 2018

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.75
CADD	Benign	7.8
DANN	Benign	0.67

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		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: rs116802062; hg19: chr8-94793073;