Genetic Variant LRRC75B:p.Pro307Pro (chr22-24585913-G-A) – ACMG Classification: Benign (-11 pts)

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_StrongBP6_ModerateBP7BS2

The NM_207644.3(LRRC75B):c.921C>T(p.Pro307Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000199 in 1,600,854 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0011 ( 2 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

LRRC75B
NM_207644.3 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -2.07

Publications

2 publications found

Variant links:

Genes affected

LRRC75B (HGNC:33155): (leucine rich repeat containing 75B) Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

LRRC75B links:

ENSG00000286070 (HGNC:):

ENSG00000286070 links:

GGT1 (HGNC:4250): (gamma-glutamyltransferase 1) The enzyme encoded by this gene is a type I gamma-glutamyltransferase that catalyzes the transfer of the glutamyl moiety of glutathione to a variety of amino acids and dipeptide acceptors. The enzyme is composed of a heavy chain and a light chain, which are derived from a single precursor protein. It is expressed in tissues involved in absorption and secretion and may contribute to the etiology of diabetes and other metabolic disorders. Multiple alternatively spliced variants have been identified. There are a number of related genes present on chromosomes 20 and 22, and putative pseudogenes for this gene on chromosomes 2, 13, and 22. [provided by RefSeq, Jan 2014]

GGT1 Gene-Disease associations (from GenCC):

gamma-glutamyl transpeptidase deficiency
Inheritance: AR Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics

GGT1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.89).

BP6

Variant 22-24585913-G-A is Benign according to our data. Variant chr22-24585913-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 2653000.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-2.07 with no splicing effect.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_207644.3. 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
	LRRC75B	NM_207644.3	MANE Select	c.921C>T	p.Pro307Pro	synonymous	Exon 4 of 4	NP_997527.2	Q2VPJ9-1
	GGT1	NM_013430.3		c.-429+2105G>A		intron	N/A	NP_038347.2	P19440-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
LRRC75B	ENST00000318753.13	TSL:1 MANE Select	c.921C>T	p.Pro307Pro	synonymous	Exon 4 of 4	ENSP00000320520.8	Q2VPJ9-1
ENSG00000286070	ENST00000652248.1		n.*167+2105G>A		intron	N/A	ENSP00000499210.1
LRRC75B	ENST00000935984.1		c.1314C>T	p.Pro438Pro	synonymous	Exon 6 of 6	ENSP00000606043.1

Frequencies

GnomAD3 genomes

AF:

0.000985

AC:

150

AN:

152216

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00342

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.000224

AC:

AN:

228120

AF XY:

0.000159

show subpopulations

Gnomad AFR exome

AF:

0.00315

Gnomad AMR exome

AF:

0.000151

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000293

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000109

AC:

158

AN:

1448520

Hom.:

Cov.:

AF XY:

0.0000959

AC XY:

AN XY:

719780

show subpopulations

African (AFR)

AF:

0.00358

AC:

119

AN:

33274

American (AMR)

AF:

0.000160

AC:

AN:

43722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25914

East Asian (EAS)

AF:

0.00

AC:

AN:

39284

South Asian (SAS)

AF:

0.0000350

AC:

AN:

85678

European-Finnish (FIN)

AF:

0.00

AC:

AN:

47848

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5668

European-Non Finnish (NFE)

AF:

0.0000145

AC:

AN:

1107232

Other (OTH)

AF:

0.000217

AC:

AN:

59900

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

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

AF:

0.00105

AC:

160

AN:

152334

Hom.:

Cov.:

AF XY:

0.00105

AC XY:

AN XY:

74482

show subpopulations

African (AFR)

AF:

0.00366

AC:

152

AN:

41586

American (AMR)

AF:

0.000196

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68026

Other (OTH)

AF:

0.00189

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000646

Hom.:

Bravo

AF:

0.00136

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.89

CADD

Benign

0.17

(source)

DANN

Benign

0.44

PhyloP100

-2.1

Mutation Taster

=99/1

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over