chr15-49866349-C-T

Position:

• chr15-49866349-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_024837.4(ATP8B4):​c.3163G>A​(p.Val1055Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,418 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ATP8B4 NM_024837.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.469

Genes affected

ATP8B4 (HGNC:13536): (ATPase phospholipid transporting 8B4 (putative)) This gene encodes a member of the cation transport ATPase (P-type) family and type IV subfamily. The encoded protein is involved in phospholipid transport in the cell membrane. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2013]

ACMG classification

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=0.15439749).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ATP8B4	NM_024837.4	c.3163G>A	p.Val1055Ile	missense_variant	26/28	ENST00000284509.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ATP8B4	ENST00000284509.11	c.3163G>A	p.Val1055Ile	missense_variant	26/28	5	NM_024837.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461418 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727006

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 27, 2024

The c.3163G>A (p.V1055I) alteration is located in exon 26 (coding exon 25) of the ATP8B4 gene. This alteration results from a G to A substitution at nucleotide position 3163, causing the valine (V) at amino acid position 1055 to be replaced by an isoleucine (I). 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	0.073
BayesDel_addAF	Benign	-0.066	T
BayesDel_noAF	Benign	-0.33
CADD	Benign	17
DANN	Benign	0.93
DEOGEN2	Benign	0.0012	T;T
Eigen	Benign	-0.32
Eigen_PC	Benign	-0.14
FATHMM_MKL	Benign	0.75	D
LIST_S2	Benign	0.82	T;.
M_CAP	Benign	0.026	D
MetaRNN	Benign	0.15	T;T
MetaSVM	Uncertain	-0.23	T
MutationAssessor	Benign	0.88	L;L
MutationTaster	Benign	0.67	D;D
PrimateAI	Benign	0.39	T
PROVEAN	Benign	0.070	N;N
REVEL	Benign	0.21
Sift	Benign	0.30	T;T
Sift4G	Benign	0.50	T;T
Polyphen		0.0	B;B
Vest4		0.13
MutPred		0.27		Gain of helix (P = 0.132);Gain of helix (P = 0.132);
MVP		0.72
MPC		0.046
ClinPred		0.91	D
GERP RS		4.2
Varity_R		0.085
gMVP		0.42

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr15-50158546;