17-50655861-C-G

Position:

• chr17-50655861-C-G

Variant summary

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

The NM_003786.4(ABCC3):​c.75C>G​(p.Asn25Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: ABCC3 NM_003786.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.630

Genes affected

ABCC3 (HGNC:54): (ATP binding cassette subfamily C member 3) The protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. 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). This protein is a member of the MRP subfamily which is involved in multi-drug resistance. The specific function of this protein has not yet been determined; however, this protein may play a role in the transport of biliary and intestinal excretion of organic anions. Alternatively spliced variants which encode different protein isoforms have been described; however, not all variants have been fully characterized. [provided by RefSeq, Jul 2008]

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=0.14245194).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ABCC3	NM_003786.4	c.75C>G	p.Asn25Lys	missense_variant	2/31	ENST00000285238.13
ABCC3	NM_001144070.2	c.75C>G	p.Asn25Lys	missense_variant	2/12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ABCC3	ENST00000285238.13	c.75C>G	p.Asn25Lys	missense_variant	2/31	1	NM_003786.4	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

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

Jun 03, 2024

The c.75C>G (p.N25K) alteration is located in exon 2 (coding exon 2) of the ABCC3 gene. This alteration results from a C to G substitution at nucleotide position 75, causing the asparagine (N) at amino acid position 25 to be replaced by a lysine (K). 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	0.16
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	15
DANN	Uncertain	1.0
DEOGEN2	Benign	0.25	.;T
Eigen	Benign	-0.19
Eigen_PC	Benign	-0.15
FATHMM_MKL	Benign	0.16	N
LIST_S2	Benign	0.75	T;T
M_CAP	Benign	0.0071	T
MetaRNN	Benign	0.14	T;T
MetaSVM	Benign	-0.88	T
MutationAssessor	Uncertain	2.4	M;M
MutationTaster	Benign	0.63	N;N
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-2.8	D;N
REVEL	Benign	0.10
Sift	Uncertain	0.028	D;D
Sift4G	Benign	0.10	T;T
Polyphen		0.030	B;B
Vest4		0.39
MutPred		0.41		Gain of methylation at N25 (P = 0.0035);Gain of methylation at N25 (P = 0.0035);
MVP		0.65
MPC		0.22
ClinPred		0.46	T
GERP RS		1.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.10
gMVP		0.068

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: chr17-48733222;