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rs144252983

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_001077418.3(TMEM231):c.582+8C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000046 in 1,608,762 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/2 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 23)
Exomes 𝑓: 0.000050 ( 0 hom. )

Consequence

TMEM231
NM_001077418.3 splice_region, intron

Scores

2
Splicing: ADA: 0.00003145
2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -1.17
Variant links:
Genes affected
TMEM231 (HGNC:37234): (transmembrane protein 231) This gene encodes a transmembrane protein, which is a component of the B9 complex involved in the formation of the diffusion barrier between the cilia and plasma membrane. Mutations in this gene cause Joubert syndrome (JBTS). Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jan 2013]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.89).
BP6
Variant 16-75545344-G-A is Benign according to our data. Variant chr16-75545344-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2163316.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
TMEM231NM_001077418.3 linkuse as main transcriptc.582+8C>T splice_region_variant, intron_variant ENST00000258173.11
TMEM231NM_001077416.2 linkuse as main transcriptc.741+8C>T splice_region_variant, intron_variant
TMEM231NR_074083.2 linkuse as main transcriptn.748+8C>T splice_region_variant, intron_variant, non_coding_transcript_variant

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
TMEM231ENST00000258173.11 linkuse as main transcriptc.582+8C>T splice_region_variant, intron_variant 1 NM_001077418.3 P1Q9H6L2-1

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
152090
Hom.:
0
Cov.:
23
show subpopulations
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
GnomAD3 exomes
AF:
0.0000121
AC:
3
AN:
247248
Hom.:
0
AF XY:
0.00000745
AC XY:
1
AN XY:
134172
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000657
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000893
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000501
AC:
73
AN:
1456672
Hom.:
0
Cov.:
31
AF XY:
0.0000553
AC XY:
40
AN XY:
723858
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000698
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000595
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
AF:
0.00000658
AC:
1
AN:
152090
Hom.:
0
Cov.:
23
AF XY:
0.00
AC XY:
0
AN XY:
74302
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.00
EpiCase
AF:
0.000109
EpiControl
AF:
0.0000593

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Joubert syndrome 20;C3809352:Meckel syndrome, type 11 Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeNov 30, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.89
Cadd
Benign
0.27
Dann
Benign
0.37

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.000031
dbscSNV1_RF
Benign
0.0
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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs144252983; hg19: chr16-75579242; API