Genetic Variant NM_007283.7:c.412G>T (chr3-127721151-C-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_007283.7(MGLL):c.412G>T(p.Ala138Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,802 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 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. A138T) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

MGLL
NM_007283.7 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.256

Publications

0 publications found

Variant links:

Genes affected

MGLL (HGNC:17038): (monoglyceride lipase) This gene encodes a serine hydrolase of the AB hydrolase superfamily that catalyzes the conversion of monoacylglycerides to free fatty acids and glycerol. The encoded protein plays a critical role in several physiological processes including pain and nociperception through hydrolysis of the endocannabinoid 2-arachidonoylglycerol. Expression of this gene may play a role in cancer tumorigenesis and metastasis. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Feb 2012]

MGLL links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.29215884).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_007283.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MGLL	NM_007283.7	MANE Select	c.412G>T	p.Ala138Ser	missense	Exon 5 of 8	NP_009214.1	A0A0C4DFN3
MGLL	NM_001388312.1		c.412G>T	p.Ala138Ser	missense	Exon 5 of 9	NP_001375241.1
MGLL	NM_001388313.1		c.382G>T	p.Ala128Ser	missense	Exon 5 of 9	NP_001375242.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MGLL	ENST00000265052.10	TSL:1 MANE Select	c.412G>T	p.Ala138Ser	missense	Exon 5 of 8	ENSP00000265052.5	A0A0C4DFN3
MGLL	ENST00000398101.7	TSL:1	n.803G>T		non_coding_transcript_exon	Exon 3 of 6
MGLL	ENST00000479967.5	TSL:1	n.504G>T		non_coding_transcript_exon	Exon 5 of 6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461802

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727200

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53382

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000450

AC:

AN:

1111962

Other (OTH)

AF:

0.00

AC:

AN:

60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0000386134), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Uncertain

0.019

BayesDel_noAF

Benign

-0.21

CADD

Benign

0.30

(source)

DANN

Benign

0.49

DEOGEN2

Benign

0.090

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.27

LIST_S2

Benign

0.85

M_CAP

Benign

0.050

MetaRNN

Benign

0.29

MetaSVM

Benign

-0.70

MutationAssessor

Benign

0.68

PhyloP100

0.26

PrimateAI

Benign

0.30

PROVEAN

Benign

-1.0

REVEL

Uncertain

0.45

Sift

Benign

0.73

Sift4G

Benign

0.58

Polyphen

0.0050

Vest4

0.40

MutPred

0.73

Gain of glycosylation at T131 (P = 0.0341)

MVP

0.69

MPC

0.47

ClinPred

0.13

GERP RS

-7.9

PromoterAI

-0.044

Neutral

(source)

Varity_R

0.073

gMVP

0.56

Mutation Taster

=93/7

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over