Genetic Variant NM_022169.5:c.1166C>T (chr11-119158331-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_022169.5(ABCG4):c.1166C>T(p.Thr389Met) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000737 in 1,613,894 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

ABCG4
NM_022169.5 missense, splice_region

Scores

Splicing: ADA: 0.008304

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.06

Variant links:

Genes affected

ABCG4 (HGNC:13884): (ATP binding cassette subfamily G member 4) The protein encoded by this gene is a member of the ATP-binding cassette (ABC) transporter superfamily. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). The encoded protein is a member of the White subfamily and plays an important role in cellular cholesterol homeostasis. This protein functions as either a homodimer or as a heterodimer with another ABC subfamily protein such as ABCG1. [provided by RefSeq, Jan 2017]

ABCG4 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0744265).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCG4	NM_022169.5 link	c.1166C>T	p.Thr389Met	missense_variant, splice_region_variant	Exon 10 of 15	ENST00000619701.5	NP_071452.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCG4	ENST00000619701.5 link	c.1166C>T	p.Thr389Met	missense_variant, splice_region_variant	Exon 10 of 15	1	NM_022169.5	ENSP00000481728.1		Q9H172-1

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000338

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000557

AC:

AN:

251404

Hom.:

AF XY:

0.0000589

AC XY:

AN XY:

135880

show subpopulations

Gnomad AFR exome

AF:

0.000554

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000691

AC:

101

AN:

1461586

Hom.:

Cov.:

AF XY:

0.0000674

AC XY:

AN XY:

727128

show subpopulations

Gnomad4 AFR exome

AF:

0.000657

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000675

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000118

AC:

AN:

152308

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.000337

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000111

Hom.:

Bravo

AF:

0.000128

ESP6500AA

AF:

0.000455

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 20, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1166C>T (p.T389M) alteration is located in exon 10 (coding exon 9) of the ABCG4 gene. This alteration results from a C to T substitution at nucleotide position 1166, causing the threonine (T) at amino acid position 389 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.38

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.22

T;T;T

Eigen

Benign

-0.17

Eigen_PC

Benign

-0.0030

FATHMM_MKL

Uncertain

0.86

LIST_S2

Benign

0.71

.;.;T

M_CAP

Benign

0.0068

MetaRNN

Benign

0.074

T;T;T

MetaSVM

Benign

-0.80

MutationAssessor

Benign

1.3

L;L;L

PrimateAI

Uncertain

0.50

Sift4G

Benign

0.14

T;T;T

Polyphen

0.13

B;B;B

Vest4

0.19

MVP

0.68

ClinPred

0.059

GERP RS

4.5

Varity_R

0.037

gMVP

0.44

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0083

dbscSNV1_RF

Benign

0.17

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over