9-104781095-T-C

Position:

• chr9-104781095-T-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_005502.4(ABCA1):​c.*3220A>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.028 in 152,752 control chromosomes in the GnomAD database, including 94 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.028 (94 hom., cov: 33)
  • Exomes 𝑓: 0.069 (0 hom.)
• Consequence: ABCA1 NM_005502.4 3_prime_UTR
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:4
• Conservation: PhyloP100: 1.51

Genes affected

ABCA1 (HGNC:29): (ATP binding cassette subfamily A member 1) 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. With cholesterol as its substrate, this protein functions as a cholesteral efflux pump in the cellular lipid removal pathway. Mutations in both alleles of this gene cause Tangier disease and familial high-density lipoprotein (HDL) deficiency. [provided by RefSeq, Sep 2019]

NIPSNAP3B (HGNC:):

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.61).
• BP6: Variant 9-104781095-T-C is Benign according to our data. Variant chr9-104781095-T-C is described in ClinVar as [Benign]. Clinvar id is 364322.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAdExome4 highest population allele frequency = 0.0694 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ABCA1	NM_005502.4	c.*3220A>G		3_prime_UTR_variant	50/50	ENST00000374736.8
NIPSNAP3B	XR_007061325.1	n.960-6522T>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ABCA1	ENST00000374736.8	c.*3220A>G		3_prime_UTR_variant	50/50	1	NM_005502.4	P1
ABCA1	ENST00000678995.1	c.*3220A>G		3_prime_UTR_variant	50/50

Frequencies

GnomAD3 genomes AF: 0.0279 AC: 4252 AN: 152202 Hom.: 94 Cov.: 33

Gnomad AFR AF: 0.00721

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0179

Gnomad ASJ AF: 0.0107

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.00579

Gnomad FIN AF: 0.0642

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0423

Gnomad OTH AF: 0.0253

GnomAD4 exome AF: 0.0694 AC: 30 AN: 432 Hom.: 0 Cov.: 0 AF XY: 0.0654 AC XY: 17 AN XY: 260

Gnomad4 FIN exome AF: 0.0704

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0279 AC: 4251 AN: 152320 Hom.: 94 Cov.: 33 AF XY: 0.0284 AC XY: 2119 AN XY: 74494

Gnomad4 AFR AF: 0.00719

Gnomad4 AMR AF: 0.0178

Gnomad4 ASJ AF: 0.0107

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.00601

Gnomad4 FIN AF: 0.0642

Gnomad4 NFE AF: 0.0423

Gnomad4 OTH AF: 0.0251

Alfa AF: 0.0377 Hom.: 20

Bravo AF: 0.0231

Asia WGS AF: 0.00260 AC: 9 AN: 3470

ClinVar

Significance: Benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	May 10, 2021	- -

Hypoalphalipoproteinemia, primary, 1 Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Tangier disease Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.61
CADD	Benign	13
DANN	Benign	0.72
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

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

LitVar

Other links and lift over

dbSNP: rs10991377; hg19: chr9-107543376;