20-33222046-C-T

Position:

• chr20-33222046-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_178466.5(BPIFA3):​c.128-1765C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.117 in 152,112 control chromosomes in the GnomAD database, including 3,502 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.12 (3502 hom., cov: 32)
• Consequence: BPIFA3 NM_178466.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.08

Genes affected

BPIFA3 (HGNC:16204): (BPI fold containing family A member 3) Predicted to enable lipid binding activity. Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.96).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.4 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BPIFA3	NM_178466.5	c.128-1765C>T		intron_variant		ENST00000375454.8	NP_848561.2
BPIFA3	NM_001042439.2	c.128-1765C>T		intron_variant			NP_001035904.1
BPIFA3	XR_244132.4	n.355-1765C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BPIFA3	ENST00000375454.8	c.128-1765C>T		intron_variant		5	NM_178466.5	ENSP00000364603	P1
BPIFA3	ENST00000375452.3	c.128-1765C>T		intron_variant		1		ENSP00000364601
BPIFA3	ENST00000490499.5	n.355-1410C>T		intron_variant, non_coding_transcript_variant		1
BPIFA3	ENST00000471233.1	n.338-1765C>T		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes AF: 0.117 AC: 17720 AN: 151994 Hom.: 3490 Cov.: 32

Gnomad AFR AF: 0.405

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0421

Gnomad ASJ AF: 0.00288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00312

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.0411

Gnomad NFE AF: 0.00194

Gnomad OTH AF: 0.0880

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

GnomAD4 genome AF: 0.117 AC: 17782 AN: 152112 Hom.: 3502 Cov.: 32 AF XY: 0.114 AC XY: 8458 AN XY: 74358

Gnomad4 AFR AF: 0.405

Gnomad4 AMR AF: 0.0420

Gnomad4 ASJ AF: 0.00288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00270

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00194

Gnomad4 OTH AF: 0.0871

Alfa AF: 0.0596 Hom.: 206

Bravo AF: 0.133

Asia WGS AF: 0.0250 AC: 89 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
CADD	Benign	1.9
DANN	Benign	0.44

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: rs1407015; hg19: chr20-31809852;