16-81259457-A-G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_017429.3(BCO1):c.194-219A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0355 in 152,250 control chromosomes in the GnomAD database, including 300 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.035 (300 hom., cov: 32)
• Consequence: BCO1 NM_017429.3 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.50

Genes affected

BCO1 (HGNC:13815): (beta-carotene oxygenase 1) Vitamin A metabolism is important for vital processes such as vision, embryonic development, cell differentiation, and membrane and skin protection. The protein encoded by this gene is a key enzyme in beta-carotene metabolism to vitamin A. It catalyzes the oxidative cleavage of beta,beta-carotene into two retinal molecules. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.05).
• BP6: Variant 16-81259457-A-G is Benign according to our data. Variant chr16-81259457-A-G is described in ClinVar as [Benign]. Clinvar id is 1230206.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.12 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BCO1	NM_017429.3	c.194-219A>G		intron_variant		ENST00000258168.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BCO1	ENST00000258168.7	c.194-219A>G		intron_variant		1	NM_017429.3	P1
BCO1	ENST00000564552.1	c.194-219A>G		intron_variant		2
BCO1	ENST00000563804.5	c.194-2679A>G		intron_variant, NMD_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.0354 AC: 5379 AN: 152132 Hom.: 298 Cov.: 32

Gnomad AFR AF: 0.123

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0109

Gnomad ASJ AF: 0.00950

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000827

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000603

Gnomad OTH AF: 0.0253

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0355 AC: 5399 AN: 152250 Hom.: 300 Cov.: 32 AF XY: 0.0339 AC XY: 2526 AN XY: 74458

Gnomad4 AFR AF: 0.123

Gnomad4 AMR AF: 0.0108

Gnomad4 ASJ AF: 0.00950

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000828

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000603

Gnomad4 OTH AF: 0.0251

Alfa AF: 0.00608 Hom.: 6

Bravo AF: 0.0391

Asia WGS AF: 0.00837 AC: 29 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jun 19, 2021

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.1
Cadd	Benign	0.45
Dann	Benign	0.49

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: rs149219639; hg19: chr16-81293062;