rs780823805

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM1PP3

The NM_153704.6(TMEM67):​c.224G>A​(p.Gly75Glu) variant causes a missense, splice region change. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G75R) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 26)
Exomes 𝑓: 0.0000073 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

TMEM67
NM_153704.6 missense, splice_region

Scores

7
6
5
Splicing: ADA: 0.9988
2

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 4.51

Publications

1 publications found
Variant links:
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]
TMEM67 Gene-Disease associations (from GenCC):
  • ciliopathy
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, ClinGen
  • COACH syndrome 1
    Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
  • Meckel syndrome, type 3
    Inheritance: AR Classification: DEFINITIVE Submitted by: Ambry Genetics
  • nephronophthisis 11
    Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
  • COACH syndrome 1
    Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet
  • Joubert syndrome 6
    Inheritance: AR Classification: STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • Joubert syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • Meckel syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • Senior-Boichis syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM1
In a hotspot region, there are 6 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_153704.6
PP3
Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_153704.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TMEM67
NM_153704.6
MANE Select
c.224G>Ap.Gly75Glu
missense splice_region
Exon 2 of 28NP_714915.3
TMEM67
NM_001142301.1
c.-62+641G>A
intron
N/ANP_001135773.1Q5HYA8
TMEM67
NR_024522.2
n.245G>A
splice_region non_coding_transcript_exon
Exon 2 of 29

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TMEM67
ENST00000453321.8
TSL:1 MANE Select
c.224G>Ap.Gly75Glu
missense splice_region
Exon 2 of 28ENSP00000389998.3Q5HYA8
TMEM67
ENST00000452276.6
TSL:1
c.224G>Ap.Gly75Glu
missense splice_region
Exon 2 of 27ENSP00000388671.2C9JRQ8
TMEM67
ENST00000474944.5
TSL:1
n.244G>A
splice_region non_coding_transcript_exon
Exon 2 of 17

Frequencies

GnomAD3 genomes
AF:
0.00
AC:
0
AN:
123324
Hom.:
0
Cov.:
26
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000358
AC:
6
AN:
167466
AF XY:
0.0000216
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000518
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000734
AC:
5
AN:
681202
Hom.:
0
Cov.:
14
AF XY:
0.00000562
AC XY:
2
AN XY:
356174
show subpopulations
⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
15024
American (AMR)
AF:
0.00
AC:
0
AN:
26146
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
16532
East Asian (EAS)
AF:
0.0000352
AC:
1
AN:
28414
South Asian (SAS)
AF:
0.00
AC:
0
AN:
50904
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
44180
Middle Eastern (MID)
AF:
0.000415
AC:
1
AN:
2412
European-Non Finnish (NFE)
AF:
0.00000642
AC:
3
AN:
467076
Other (OTH)
AF:
0.00
AC:
0
AN:
30514
⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.275
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Data not reliable, filtered out with message: AC0;AS_VQSR
AF:
0.00
AC:
0
AN:
123324
Hom.:
0
Cov.:
26
AF XY:
0.00
AC XY:
0
AN XY:
58242
African (AFR)
AF:
0.00
AC:
0
AN:
30802
American (AMR)
AF:
0.00
AC:
0
AN:
11210
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3258
East Asian (EAS)
AF:
0.00
AC:
0
AN:
4346
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4088
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
5546
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
214
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
61418
Other (OTH)
AF:
0.00
AC:
0
AN:
1646
Alfa
AF:
0.00
Hom.:
0
ExAC
AF:
0.0000248
AC:
3

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Inborn genetic diseases (1)
-
1
-
Meckel syndrome, type 3;C1853153:Joubert syndrome 6;C1865794:RHYNS syndrome;C2673874:Bardet-Biedl syndrome 14;C3150796:Nephronophthisis 11;C5435651:COACH syndrome 1 (1)
-
1
-
Meckel-Gruber syndrome;C5979921:Joubert syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.18
BayesDel_addAF
Uncertain
0.082
D
BayesDel_noAF
Pathogenic
0.23
CADD
Pathogenic
32
DANN
Uncertain
1.0
DEOGEN2
Benign
0.26
T
Eigen
Pathogenic
0.74
Eigen_PC
Pathogenic
0.73
FATHMM_MKL
Uncertain
0.92
D
LIST_S2
Benign
0.82
T
M_CAP
Pathogenic
0.41
D
MetaRNN
Uncertain
0.61
D
MetaSVM
Pathogenic
1.0
D
MutationAssessor
Pathogenic
2.9
M
PhyloP100
4.5
PrimateAI
Benign
0.45
T
PROVEAN
Uncertain
-2.9
D
REVEL
Pathogenic
0.70
Sift
Benign
0.11
T
Sift4G
Uncertain
0.017
D
Polyphen
0.98
D
Vest4
0.74
MutPred
0.41
Gain of solvent accessibility (P = 0.012)
MVP
1.0
MPC
0.62
ClinPred
0.62
D
GERP RS
5.9
Varity_R
0.30
gMVP
0.86
Mutation Taster
=83/17
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
1.0
dbscSNV1_RF
Pathogenic
0.79
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

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

Publications

Other links and lift over

dbSNP: rs780823805; hg19: chr8-94768006; API