NM_000055.4:c.1685-8T>A

Variant names:

• chr3-165773514-A-T
• rs1004662085
• NM_000055.4:c.1685-8T>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_000055.4(BCHE):​c.1685-8T>A variant causes a splice region, intron change. The variant allele was found at a frequency of 0.000000689 in 1,450,802 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: BCHE NM_000055.4 splice_region, intron
• Scores: Splicing: ADA: 0.2477
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.22
• Publications: 0 publications found

Genes affected

BCHE (HGNC:983): (butyrylcholinesterase) This gene encodes a cholinesterase enzyme and member of the type-B carboxylesterase/lipase family of proteins. The encoded enzyme exhibits broad substrate specificity and is involved in the detoxification of poisons including organophosphate nerve agents and pesticides, and the metabolism of drugs including cocaine, heroin and aspirin. Humans homozygous for certain mutations in this gene exhibit prolonged apnea after administration of the muscle relaxant succinylcholine. [provided by RefSeq, Jul 2016]

LINC01322 (HGNC:50528): (long intergenic non-protein coding RNA 1322)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.43).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BCHE	NM_000055.4	c.1685-8T>A		splice_region_variant, intron_variant	Intron 3 of 3	ENST00000264381.8	NP_000046.1
BCHE	NR_137635.2	n.278-8T>A		splice_region_variant, intron_variant	Intron 2 of 2
BCHE	NR_137636.2	n.1882-8T>A		splice_region_variant, intron_variant	Intron 4 of 4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BCHE	ENST00000264381.8	c.1685-8T>A		splice_region_variant, intron_variant	Intron 3 of 3	1	NM_000055.4	ENSP00000264381.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.89e-7 AC: 1 AN: 1450802 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 721982

African (AFR) AF: 0.00 AC: 0 AN: 33262

American (AMR) AF: 0.00 AC: 0 AN: 44536

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26004

East Asian (EAS) AF: 0.00 AC: 0 AN: 39480

South Asian (SAS) AF: 0.00 AC: 0 AN: 85692

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53106

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5738

European-Non Finnish (NFE) AF: 9.07e-7 AC: 1 AN: 1102960

Other (OTH) AF: 0.00 AC: 0 AN: 60024

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.43
CADD	Benign	16
DANN	Benign	0.87
PhyloP100		4.2

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.25
dbscSNV1_RF	Benign	0.40
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1004662085; hg19: chr3-165491302;