rs35748854

Positions:

• chr5-37000855-A-C

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_133433.4(NIPBL):​c.3541A>C​(p.Arg1181=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00146 in 1,612,244 control chromosomes in the GnomAD database, including 26 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0082 (12 hom., cov: 32)
  • Exomes 𝑓: 0.00076 (14 hom.)
• Consequence: NIPBL NM_133433.4 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:7
• Conservation: PhyloP100: 2.03

Genes affected

NIPBL (HGNC:28862): (NIPBL cohesin loading factor) This gene encodes the homolog of the Drosophila melanogaster Nipped-B gene product and fungal Scc2-type sister chromatid cohesion proteins. The Drosophila protein facilitates enhancer-promoter communication of remote enhancers and plays a role in developmental regulation. It is also homologous to a family of chromosomal adherins with broad roles in sister chromatid cohesion, chromosome condensation, and DNA repair. The human protein has a bipartite nuclear targeting sequence and a putative HEAT repeat. Condensins, cohesins and other complexes with chromosome-related functions also contain HEAT repeats. Mutations in this gene result in Cornelia de Lange syndrome, a disorder characterized by dysmorphic facial features, growth delay, limb reduction defects, and cognitive disability. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.57).
• BP6: Variant 5-37000855-A-C is Benign according to our data. Variant chr5-37000855-A-C is described in ClinVar as [Benign]. Clinvar id is 159087.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=2.03 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00817 (1244/152306) while in subpopulation AFR AF= 0.0285 (1183/41566). AF 95% confidence interval is 0.0271. There are 12 homozygotes in gnomad4. There are 582 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 1244 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NIPBL	NM_133433.4	c.3541A>C	p.Arg1181=	synonymous_variant	13/47	ENST00000282516.13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NIPBL	ENST00000282516.13	c.3541A>C	p.Arg1181=	synonymous_variant	13/47	1	NM_133433.4	P1
NIPBL	ENST00000448238.2	c.3541A>C	p.Arg1181=	synonymous_variant	13/46	1
NIPBL	ENST00000652901.1	c.3541A>C	p.Arg1181=	synonymous_variant	13/46

Frequencies

GnomAD3 genomes AF: 0.00818 AC: 1245 AN: 152188 Hom.: 13 Cov.: 32

Gnomad AFR AF: 0.0286

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00295

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000441

Gnomad OTH AF: 0.00573

GnomAD3 exomes AF: 0.00229 AC: 573 AN: 250406 Hom.: 4 AF XY: 0.00169 AC XY: 229 AN XY: 135396

Gnomad AFR exome AF: 0.0310

Gnomad AMR exome AF: 0.00183

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000354

Gnomad OTH exome AF: 0.000655

GnomAD4 exome AF: 0.000760 AC: 1109 AN: 1459938 Hom.: 14 Cov.: 30 AF XY: 0.000639 AC XY: 464 AN XY: 726386

Gnomad4 AFR exome AF: 0.0266

Gnomad4 AMR exome AF: 0.00195

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000189

Gnomad4 OTH exome AF: 0.00174

GnomAD4 genome AF: 0.00817 AC: 1244 AN: 152306 Hom.: 12 Cov.: 32 AF XY: 0.00781 AC XY: 582 AN XY: 74484

Gnomad4 AFR AF: 0.0285

Gnomad4 AMR AF: 0.00294

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000441

Gnomad4 OTH AF: 0.00567

Alfa AF: 0.00399 Hom.: 2

Bravo AF: 0.00919

Asia WGS AF: 0.000579 AC: 2 AN: 3470

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Cornelia de Lange syndrome 1 Benign:3

Benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Jul 15, 2021	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -

not provided Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 29, 2018	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Feb 08, 2013

- -

Inborn genetic diseases Benign:1

Benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 06, 2016

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.57
CADD	Benign	11
DANN	Benign	0.63
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs35748854; hg19: chr5-37000957;