Genetic Variant TRPM7:p.Thr1482Asn (chr15-50586433-G-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_017672.6(TRPM7):c.4445C>A(p.Thr1482Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,660 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 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. T1482I) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TRPM7
NM_017672.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.99

Publications

65 publications found

Variant links:

Genes affected

TRPM7 (HGNC:17994): (transient receptor potential cation channel subfamily M member 7) This gene belongs to the melastatin subfamily of transient receptor potential family of ion channels. The protein encoded by this gene is both an ion channel and a serine/threonine protein kinase. The kinase activity is essential for the ion channel function, which serves to increase intracellular calcium levels and to help regulate magnesium ion homeostasis. The encoded protein is involved in cytoskeletal organization, cell adhesion, cell migration and organogenesis. Defects in this gene are a cause of amyotrophic lateral sclerosis-parkinsonism/dementia complex of Guam. The gene may also be associated with defects of cardiac function. [provided by RefSeq, Aug 2017]

TRPM7 Gene-Disease associations (from GenCC):

hypomagnesemia, seizures, and intellectual disability
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
autosomal dominant macrothrombocytopenia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
macrothrombocytopenia, isolated
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
amyotrophic lateral sclerosis-parkinsonism-dementia complex
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

TRPM7 links:

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ACMG classification

Classification was made for transcript

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=0.060967565).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRPM7	NM_017672.6 link	c.4445C>A	p.Thr1482Asn	missense_variant	Exon 28 of 39	ENST00000646667.1	NP_060142.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
TRPM7	ENST00000646667.1 link	c.4445C>A	p.Thr1482Asn	missense_variant	Exon 28 of 39		NM_017672.6	ENSP00000495860.1
TRPM7	ENST00000560955.5 link	c.4445C>A	p.Thr1482Asn	missense_variant	Exon 28 of 39	1		ENSP00000453277.1
TRPM7	ENST00000560849.2 link	n.150C>A		non_coding_transcript_exon_variant	Exon 1 of 6	3
TRPM7	ENST00000645282.1 link	n.249C>A		non_coding_transcript_exon_variant	Exon 3 of 4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

248672

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460660

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726660

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33464

American (AMR)

AF:

0.00

AC:

AN:

44704

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26120

East Asian (EAS)

AF:

0.00

AC:

AN:

39624

South Asian (SAS)

AF:

0.00

AC:

AN:

86198

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53370

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111084

Other (OTH)

AF:

0.00

AC:

AN:

60332

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

2048

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.61

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.14

T;T;T

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.30

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.0

.;T;T

M_CAP

Benign

0.010

MetaRNN

Benign

0.061

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.69

N;N;.

PhyloP100

2.0

PrimateAI

Benign

0.33

PROVEAN

Benign

0.0

.;N;N

REVEL

Benign

0.0

Sift

Pathogenic

0.0

.;T;T

Sift4G

Pathogenic

0.0

.;T;T

Vest4

0.0

ClinPred

0.079

GERP RS

2.2

Varity_R

0.023

gMVP

0.26

Splicing

Name

Calibrated prediction

Score

Prediction

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over