Genetic Variant CD74:p.Arg77Trp (chr5-150407221-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001025159.3(CD74):c.229C>T(p.Arg77Trp) variant causes a missense change. The variant allele was found at a frequency of 0.0000551 in 1,613,868 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 1 hom., cov: 32)

Exomes 𝑓: 0.000052 ( 0 hom. )

Consequence

CD74
NM_001025159.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.04

Variant links:

Genes affected

CD74 (HGNC:1697): (CD74 molecule) The protein encoded by this gene associates with class II major histocompatibility complex (MHC) and is an important chaperone that regulates antigen presentation for immune response. It also serves as cell surface receptor for the cytokine macrophage migration inhibitory factor (MIF) which, when bound to the encoded protein, initiates survival pathways and cell proliferation. This protein also interacts with amyloid precursor protein (APP) and suppresses the production of amyloid beta (Abeta). Multiple alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Aug 2011]

CD74 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CD74	NM_001025159.3 link	c.229C>T	p.Arg77Trp	missense_variant	Exon 2 of 9	ENST00000009530.13	NP_001020330.1	P04233-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CD74	ENST00000009530.13 link	c.229C>T	p.Arg77Trp	missense_variant	Exon 2 of 9	2	NM_001025159.3	ENSP00000009530.7		P04233-1

Frequencies

GnomAD3 genomes

AF:

0.0000855

AC:

AN:

152094

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.0000638

AC:

AN:

250680

Hom.:

AF XY:

0.0000738

AC XY:

AN XY:

135582

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000654

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000106

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000520

AC:

AN:

1461774

Hom.:

Cov.:

AF XY:

0.0000536

AC XY:

AN XY:

727186

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000549

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000855

AC:

AN:

152094

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74274

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.000956

Alfa

AF:

0.0000987

Hom.:

Bravo

AF:

0.0000756

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000659

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 11, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.229C>T (p.R77W) alteration is located in exon 2 (coding exon 2) of the CD74 gene. This alteration results from a C to T substitution at nucleotide position 229, causing the arginine (R) at amino acid position 77 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.26

BayesDel_addAF

Benign

-0.074

BayesDel_noAF

Benign

-0.15

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.14

.;.;T;D

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Benign

0.64

LIST_S2

Uncertain

0.95

D;D;D;D

M_CAP

Benign

0.084

MetaRNN

Uncertain

0.55

D;D;D;D

MetaSVM

Benign

-0.67

MutationAssessor

Uncertain

2.6

M;M;.;M

PrimateAI

Benign

0.42

PROVEAN

Pathogenic

-4.5

D;D;D;D

REVEL

Uncertain

0.37

Sift

Uncertain

0.0010

D;D;D;D

Sift4G

Uncertain

0.0020

D;D;D;D

Polyphen

1.0

D;D;.;D

Vest4

0.43

MVP

0.69

MPC

1.4

ClinPred

0.81

GERP RS

3.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.31

gMVP

0.56

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over