Genetic Variant TMEM91:c.-30+2996G>A (chr19-41354198-G-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The ENST00000539627.5(TMEM91):c.-30+2996G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00098 in 430,676 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0022 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00030 ( 1 hom. )

Consequence

TMEM91
ENST00000539627.5 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.143

Publications

4 publications found

Variant links:

Genes affected

TMEM91 (HGNC:32393): (transmembrane protein 91) Predicted to act upstream of or within hematopoietic progenitor cell differentiation. Predicted to be integral component of membrane. Predicted to be active in intracellular membrane-bounded organelle and membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMEM91 links:

ENSG00000255730 (HGNC:):

ENSG00000255730 links:

B9D2 (HGNC:28636): (B9 domain containing 2) This gene encodes a B9 domain protein, which are exclusively found in ciliated organisms. The gene is upregulated during mucociliary differentiation, and the encoded protein localizes to basal bodies and cilia. Disrupting expression of this gene results in ciliogenesis defects. [provided by RefSeq, Oct 2009]

B9D2 Gene-Disease associations (from GenCC):

Meckel syndrome, type 10
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
ciliopathy
Inheritance: AR Classification: MODERATE Submitted by: ClinGen
Meckel syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

B9D2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0041075945).

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	MANE	Protein
B9D2	NM_030578.4 link	c.*502C>T	downstream_gene_variant	ENST00000243578.8	NP_085055.2
B9D2	XM_011527349.3 link	c.*502C>T	downstream_gene_variant		XP_011525651.1
B9D2	XM_011527350.3 link	c.*502C>T	downstream_gene_variant		XP_011525652.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
B9D2	ENST00000243578.8 link	c.*502C>T		downstream_gene_variant		1	NM_030578.4	ENSP00000243578.2

Frequencies

GnomAD3 genomes

AF:

0.00222

AC:

338

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00755

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00124

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00143

GnomAD2 exomes

AF:

0.00110

AC:

AN:

14570

AF XY:

0.00101

show subpopulations

Gnomad AFR exome

AF:

0.00796

Gnomad AMR exome

AF:

0.00147

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00216

GnomAD4 exome

AF:

0.000302

AC:

AN:

278346

Hom.:

Cov.:

AF XY:

0.000302

AC XY:

AN XY:

142346

show subpopulations

African (AFR)

AF:

0.00723

AC:

AN:

8296

American (AMR)

AF:

0.000559

AC:

AN:

10738

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

9712

East Asian (EAS)

AF:

0.00

AC:

AN:

25050

South Asian (SAS)

AF:

0.000111

AC:

AN:

9026

European-Finnish (FIN)

AF:

0.00

AC:

AN:

21680

Middle Eastern (MID)

AF:

0.00

AC:

AN:

1362

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

174804

Other (OTH)

AF:

0.000962

AC:

AN:

17678

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<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

AF:

0.00222

AC:

338

AN:

152330

Hom.:

Cov.:

AF XY:

0.00207

AC XY:

154

AN XY:

74486

show subpopulations

African (AFR)

AF:

0.00753

AC:

313

AN:

41592

American (AMR)

AF:

0.00124

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5166

South Asian (SAS)

AF:

0.000414

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68030

Other (OTH)

AF:

0.00142

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.510

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00160

Hom.:

Bravo

AF:

0.00280

ExAC

AF:

0.0000961

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.35

BayesDel_addAF

Benign

-0.73

BayesDel_noAF

Benign

-0.81

CADD

Benign

2.5

(source)

DANN

Benign

0.96

FATHMM_MKL

Benign

0.059

LIST_S2

Benign

0.46

M_CAP

Benign

0.0067

MetaRNN

Benign

0.0041

PhyloP100

-0.14

Vest4

0.15

GERP RS

1.1

PromoterAI

0.013

Neutral

(source)

Mutation Taster

=99/1

polymorphism

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over