rs121908391

Variant names:

• chr17-59084045-C-G
• rs121908391
• NM_015294.6:c.326G>C

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_015294.6(TRIM37):​c.326G>C​(p.Cys109Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,540 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: TRIM37 NM_015294.6 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2 U:1
• Conservation: PhyloP100: 7.83

Genes affected

TRIM37 (HGNC:7523): (tripartite motif containing 37) This gene encodes a member of the tripartite motif (TRIM) family, whose members are involved in diverse cellular functions such as developmental patterning and oncogenesis. The TRIM motif includes zinc-binding domains, a RING finger region, a B-box motif and a coiled-coil domain. The RING finger and B-box domains chelate zinc and might be involved in protein-protein and/or protein-nucleic acid interactions. Mutations in this gene are associated with mulibrey (muscle-liver-brain-eye) nanism, an autosomal recessive disorder that involves several tissues of mesodermal origin. TRIM37 localizes in peroxisomal membranes, and has been implicated in human peroxisomal biogenesis disorders. [provided by RefSeq, Jul 2020]

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.978
• PP5: Variant 17-59084045-C-G is Pathogenic according to our data. Variant chr17-59084045-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 5245.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=1}. Variant chr17-59084045-C-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRIM37	NM_015294.6	c.326G>C	p.Cys109Ser	missense_variant	Exon 5 of 24	ENST00000262294.12	NP_056109.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRIM37	ENST00000262294.12	c.326G>C	p.Cys109Ser	missense_variant	Exon 5 of 24	1	NM_015294.6	ENSP00000262294.7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461540 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 727064

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000450

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:2 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Mulibrey nanism syndrome Pathogenic:2

May 26, 2024

Fulgent Genetics, Fulgent Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Dec 01, 2006

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

not specified Uncertain:1

May 24, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: TRIM37 c.326G>C (p.Cys109Ser) results in a non-conservative amino acid change located in the B-box-type zinc finger domain (IPR000315) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant was absent in 251212 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.326G>C has been reported in the literature in at least one compound heterozygous individual affected with Mulibrey nanism syndrome with Wilms tumor (e.g. Hamalainen_2006). These data do not provide sufficient evidence to allow any conclusion about variant significance. One publication reports experimental evidence evaluating an impact on protein function showing the variant results in altered subcellular localization in vitro, however, does not allow convincing conclusions about the variant effect (e.g. Hamalainen_2006). The following publications have been ascertained in the context of this evaluation (PMID: 17100991, 34687117). ClinVar contains an entry for this variant (Variation ID: 5245). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.31
CADD	Pathogenic	32
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.42	T;T;.
Eigen	Pathogenic	0.86
Eigen_PC	Pathogenic	0.83
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	.;D;D
M_CAP	Benign	0.073	D
MetaRNN	Pathogenic	0.98	D;D;D
MetaSVM	Uncertain	0.19	D
MutationAssessor	Uncertain	2.9	M;M;.
PrimateAI	Pathogenic	0.92	D
PROVEAN	Pathogenic	-8.3	D;D;D
REVEL	Pathogenic	0.77
Sift	Uncertain	0.014	D;D;D
Sift4G	Pathogenic	0.0	D;D;D
Polyphen		1.0	D;D;.
Vest4		0.97
MutPred		0.90		Loss of methylation at K110 (P = 0.0693);Loss of methylation at K110 (P = 0.0693);.;
MVP		0.91
MPC		2.0
ClinPred		1.0	D
GERP RS		5.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.88
gMVP		0.96

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		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: rs121908391; hg19: chr17-57161406;