chr8-116847544-T-C

Position:

• chr8-116847544-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006265.3(RAD21):​c.1852A>G​(p.Ser618Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,626 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: RAD21 NM_006265.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 5.14

Genes affected

RAD21 (HGNC:9811): (RAD21 cohesin complex component) The protein encoded by this gene is highly similar to the gene product of Schizosaccharomyces pombe rad21, a gene involved in the repair of DNA double-strand breaks, as well as in chromatid cohesion during mitosis. This protein is a nuclear phospho-protein, which becomes hyperphosphorylated in cell cycle M phase. The highly regulated association of this protein with mitotic chromatin specifically at the centromere region suggests its role in sister chromatid cohesion in mitotic cells. [provided by RefSeq, Jul 2008]

UTP23 (HGNC:28224): (UTP23 small subunit processome component) Enables mRNA 3'-UTR binding activity and mRNA 5'-UTR binding activity. Predicted to be involved in rRNA processing. Predicted to act upstream of or within endonucleolytic cleavage in 5'-ETS of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA). Predicted to be part of small-subunit processome. Predicted to be active in nucleolus. Implicated in colorectal adenocarcinoma. [provided by Alliance of Genome Resources, Apr 2022]

LOC112268030 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2553022).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RAD21	NM_006265.3	c.1852A>G	p.Ser618Gly	missense_variant	14/14	ENST00000297338.7	NP_006256.1
LOC112268030	XR_002956724.2	n.761-1344T>C		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RAD21	ENST00000297338.7	c.1852A>G	p.Ser618Gly	missense_variant	14/14	1	NM_006265.3	ENSP00000297338.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461626 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727120

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: 0.00000180

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Cornelia de Lange syndrome 4 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing;provider interpretation

Geisinger Autism and Developmental Medicine Institute, Geisinger Health System

Oct 26, 2017

This 13 year old male has a history of autism spectrum disorder, ADHD, myopia, sleep issues, anxiety, and epistaxis. The c.1852A>G variant was inherited from this patient's father. The variant has not been reported in population databases (ExAC and gnomAD). A different missense variant at the same amino acid residue has been reported in one individual from the Latino population (frequency of 0.0029%). Computional models are inconsistent. The patient's father does not have a history of neurodevelopmental concerns. -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Dec 12, 2019

Not observed in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports that this variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.085
BayesDel_addAF	Benign	0.0078	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.22	T;.;.;T
Eigen	Benign	-0.37
Eigen_PC	Benign	-0.12
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Benign	0.82	T;T;D;T
M_CAP	Benign	0.048	D
MetaRNN	Benign	0.26	T;T;T;T
MetaSVM	Benign	-0.83	T
MutationAssessor	Benign	0.015	N;.;.;.
PrimateAI	Uncertain	0.74	T
PROVEAN	Benign	-0.46	N;N;N;N
REVEL	Benign	0.23
Sift	Uncertain	0.016	D;T;T;T
Sift4G	Benign	0.28	T;T;T;T
Polyphen		0.0040	B;.;.;.
Vest4		0.27
MutPred		0.46		Loss of glycosylation at S618 (P = 0.0259);.;.;.;
MVP		0.65
MPC		1.1
ClinPred		0.44	T
GERP RS		6.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.34
gMVP		0.69

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

Other links and lift over

dbSNP: rs1554610467; hg19: chr8-117859783;