chr16-2278338-G-A

Variant names:

• chr16-2278338-G-A
• rs727502872
• NM_001089.3:c.4668C>T
• ABCA3 p.Thr1556Thr

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 2P and 13B. PM2 BP4_Strong BP6_Very_Strong BP7

The NM_001089.3(ABCA3):​c.4668C>T​(p.Thr1556Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000329 in 1,611,248 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000033 (0 hom.)
• Consequence: ABCA3 NM_001089.3 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -4.55
• Publications: 1 publications found

Genes affected

ABCA3 (HGNC:33): (ATP binding cassette subfamily A member 3) The membrane-associated 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 intracellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the ABC1 subfamily. Members of the ABC1 subfamily comprise the only major ABC subfamily found exclusively in multicellular eukaryotes. The full transporter encoded by this gene may be involved in development of resistance to xenobiotics and engulfment during programmed cell death. [provided by RefSeq, Jul 2008]

ABCA3 Gene-Disease associations (from GenCC):

• interstitial lung disease due to ABCA3 deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp

ACMG classification

Our verdict: Benign. The variant received -11 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP6: Variant 16-2278338-G-A is Benign according to our data. Variant chr16-2278338-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 162670.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-4.55 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001089.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCA3	NM_001089.3	MANE Select	c.4668C>T	p.Thr1556Thr	synonymous	Exon 30 of 33	NP_001080.2	Q99758-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ABCA3	ENST00000301732.10	TSL:1 MANE Select	c.4668C>T	p.Thr1556Thr	synonymous	Exon 30 of 33	ENSP00000301732.5	Q99758-1
	ABCA3	ENST00000382381.7	TSL:1	c.4494C>T	p.Thr1498Thr	synonymous	Exon 29 of 32	ENSP00000371818.3	H0Y3H2
	ABCA3	ENST00000967440.1		c.4668C>T	p.Thr1556Thr	synonymous	Exon 30 of 33	ENSP00000637499.1

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152146 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.000478

GnomAD2 exomes AF: 0.0000160 AC: 4 AN: 249226 AF XY: 0.00000741

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000265

Gnomad OTH exome AF: 0.000164

GnomAD4 exome AF: 0.0000329 AC: 48 AN: 1459102 Hom.: 0 Cov.: 33 AF XY: 0.0000358 AC XY: 26 AN XY: 725978

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86258

European-Finnish (FIN) AF: 0.0000592 AC: 3 AN: 50692

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5766

European-Non Finnish (NFE) AF: 0.0000342 AC: 38 AN: 1111974

Other (OTH) AF: 0.0000166 AC: 1 AN: 60376

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152146 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74312

African (AFR) AF: 0.0000483 AC: 2 AN: 41438

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10612

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68000

Other (OTH) AF: 0.000478 AC: 1 AN: 2092

Alfa AF: 0.0000301 Hom.: 0

Bravo AF: 0.0000189

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	Hereditary pulmonary alveolar proteinosis (1)
-	-	1	not provided (1)
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	0.043
DANN	Benign	0.83
PhyloP100		-4.6

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs727502872;

hg19: chr16-2328339;

COSMIC: COSV57058831;

COSMIC: COSV57058831;