3-183947386-C-A

Variant names:

• chr3-183947386-C-A
• NM_005688.4:c.3352G>T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_005688.4(ABCC5):​c.3352G>T​(p.Val1118Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,562 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ABCC5 NM_005688.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.89

Genes affected

ABCC5 (HGNC:56): (ATP binding cassette subfamily C member 5) 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. This protein functions in the cellular export of its substrate, cyclic nucleotides. This export contributes to the degradation of phosphodiesterases and possibly an elimination pathway for cyclic nucleotides. Studies show that this protein provides resistance to thiopurine anticancer drugs, 6-mercatopurine and thioguanine, and the anti-HIV drug 9-(2-phosphonylmethoxyethyl)adenine. This protein may be involved in resistance to thiopurines in acute lymphoblastic leukemia and antiretroviral nucleoside analogs in HIV-infected patients. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.822

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ABCC5	NM_005688.4	c.3352G>T	p.Val1118Phe	missense_variant	Exon 23 of 30	ENST00000334444.11	NP_005679.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ABCC5	ENST00000334444.11	c.3352G>T	p.Val1118Phe	missense_variant	Exon 23 of 30	1	NM_005688.4	ENSP00000333926.6
ABCC5	ENST00000265586.10	c.3223G>T	p.Val1075Phe	missense_variant	Exon 22 of 29	5		ENSP00000265586.6
ABCC5	ENST00000437205.5	n.*2045G>T		non_coding_transcript_exon_variant	Exon 23 of 30	5		ENSP00000403510.1
ABCC5	ENST00000437205.5	n.*2045G>T		3_prime_UTR_variant	Exon 23 of 30	5		ENSP00000403510.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461562 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727054

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 08, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3352G>T (p.V1118F) alteration is located in exon 23 (coding exon 22) of the ABCC5 gene. This alteration results from a G to T substitution at nucleotide position 3352, causing the valine (V) at amino acid position 1118 to be replaced by a phenylalanine (F). 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	Pathogenic	0.65
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.63	D;.
Eigen	Pathogenic	0.73
Eigen_PC	Uncertain	0.66
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D;D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.82	D;D
MetaSVM	Uncertain	0.27	D
MutationAssessor	Pathogenic	3.4	M;.
PrimateAI	Uncertain	0.74	T
PROVEAN	Uncertain	-4.1	D;D
REVEL	Uncertain	0.63
Sift	Uncertain	0.0050	D;D
Sift4G	Uncertain	0.0040	D;D
Polyphen		0.96	D;.
Vest4		0.94
MutPred		0.42		Loss of helix (P = 0.1299);.;
MVP		0.78
MPC		1.6
ClinPred		1.0	D
GERP RS		5.6
Varity_R		0.73
gMVP		0.98

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr3-183665174;