rs199951557

Variant names:

• chr7-6409860-C-A
• rs199951557
• NM_139179.4:c.1996G>T

Your query was ambiguous. Multiple possible variants found:

• chr7-6409860-C-A
• chr7-6409860-C-G
• chr7-6409860-C-T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_139179.4(DAGLB):​c.1996G>T​(p.Val666Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,670 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V666I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: DAGLB NM_139179.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.398
• Publications: 0 publications found

Genes affected

DAGLB (HGNC:28923): (diacylglycerol lipase beta) Enables lipase activity. Involved in arachidonic acid metabolic process. Located in nucleoplasm and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.061047405).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_139179.4. 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
	DAGLB	NM_139179.4	MANE Select	c.1996G>T	p.Val666Phe	missense	Exon 15 of 15	NP_631918.3	Q8NCG7-1
	DAGLB	NM_001142936.2		c.1609G>T	p.Val537Phe	missense	Exon 13 of 13	NP_001136408.1	Q8NCG7-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DAGLB	ENST00000297056.11	TSL:1 MANE Select	c.1996G>T	p.Val666Phe	missense	Exon 15 of 15	ENSP00000297056.6	Q8NCG7-1
	DAGLB	ENST00000878465.1		c.2104G>T	p.Val702Phe	missense	Exon 16 of 16	ENSP00000548524.1
	DAGLB	ENST00000878464.1		c.1990G>T	p.Val664Phe	missense	Exon 15 of 15	ENSP00000548523.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461670 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 727140

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

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

American (AMR) AF: 0.00 AC: 0 AN: 44724

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53206

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112004

Other (OTH) AF: 0.0000166 AC: 1 AN: 60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.066
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.63
CADD	Benign	4.4
DANN	Benign	0.97
DEOGEN2	Benign	0.053	T
Eigen	Benign	-0.91
Eigen_PC	Benign	-0.87
FATHMM_MKL	Benign	0.60	D
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.061	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.1	L
PhyloP100		0.40
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.031
Sift	Benign	0.44	T
Sift4G	Benign	0.14	T
Polyphen		0.13	B
Vest4		0.13
MutPred		0.22		Loss of disorder (P = 0.0663)
MVP		0.21
MPC		0.079
ClinPred		0.058	T
GERP RS		2.5
Varity_R		0.039
gMVP		0.31
Mutation Taster		=92/8	polymorphism

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

Other links and lift over

dbSNP: rs199951557; hg19: chr7-6449491;