11-123084547-C-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BS1_Supporting

The NM_024769.5(CLMP):c.353G>A(p.Arg118His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000273 in 1,614,000 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000029 (0 hom.)
• Consequence: CLMP NM_024769.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.22

Genes affected

CLMP (HGNC:24039): (CXADR like membrane protein) This gene encodes a type I transmembrane protein that is localized to junctional complexes between endothelial and epithelial cells and may have a role in cell-cell adhesion. Expression of this gene in white adipose tissue is implicated in adipocyte maturation and development of obesity. This gene is also essential for normal intestinal development and mutations in the gene are associated with congenital short bowel syndrome. [provided by RefSeq, Aug 2015]

(HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.19579402).
• BS1: Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.0000287 (42/1461846) while in subpopulation MID AF= 0.00052 (3/5768). AF 95% confidence interval is 0.000141. There are 0 homozygotes in gnomad4_exome. There are 28 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CLMP	NM_024769.5	c.353G>A	p.Arg118His	missense_variant	3/7	ENST00000448775.4
LOC124902775	XR_007062927.1	n.2404C>T		non_coding_transcript_exon_variant	2/2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CLMP	ENST00000448775.4	c.353G>A	p.Arg118His	missense_variant	3/7	1	NM_024769.5	P1
	ENST00000660892.2	n.401C>T		non_coding_transcript_exon_variant	3/3
CLMP	ENST00000527977.5	n.168G>A		non_coding_transcript_exon_variant	1/5	3
CLMP	ENST00000529128.1	n.339G>A		non_coding_transcript_exon_variant	2/4	3

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152154 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

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: 0.00

GnomAD3 exomes AF: 0.0000199 AC: 5 AN: 251288 Hom.: 0 AF XY: 0.0000147 AC XY: 2 AN XY: 135848

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 SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000287 AC: 42 AN: 1461846 Hom.: 0 Cov.: 31 AF XY: 0.0000385 AC XY: 28 AN XY: 727232

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.0000224

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: 0.0000252

Gnomad4 OTH exome AF: 0.0000662

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152154 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74334

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000655

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000772 Hom.: 0

Bravo AF: 0.0000302

ExAC AF: 0.0000165 AC: 2

EpiCase AF: 0.00

EpiControl AF: 0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 25, 2022

The c.353G>A (p.R118H) alteration is located in exon 3 (coding exon 3) of the CLMP gene. This alteration results from a G to A substitution at nucleotide position 353, causing the arginine (R) at amino acid position 118 to be replaced by a histidine (H). 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	0.071
BayesDel_addAF	Benign	-0.045	T
BayesDel_noAF	Benign	-0.20
Cadd	Benign	23
Dann	Uncertain	0.99
DEOGEN2	Benign	0.012	T
Eigen	Benign	-0.29
Eigen_PC	Benign	-0.067
FATHMM_MKL	Benign	0.54	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.074	D
MetaRNN	Benign	0.20	T
MetaSVM	Uncertain	-0.24	T
MutationAssessor	Benign	0.050	N
MutationTaster	Benign	0.97	D
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-1.6	N
REVEL	Uncertain	0.34
Sift	Benign	0.13	T
Sift4G	Benign	0.12	T
Polyphen		0.0070	B
Vest4		0.12
MVP		0.82
MPC		0.38
ClinPred		0.36	T
GERP RS		3.8
Varity_R		0.076
gMVP		0.31

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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

Other links and lift over

dbSNP: rs748967980; hg19: chr11-122955255;