NM_133433.4:c.458+1_458+2dupGT

Variant names:

• chr5-36961583-G-GGT
• rs797045763
• NM_133433.4:c.458+1_458+2dupGT

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP3 PP5_Moderate

The NM_133433.4(NIPBL):​c.458+1_458+2dupGT variant causes a splice region, intron change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: NIPBL NM_133433.4 splice_region, intron
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 9.48
• Publications: 0 publications found

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]

NIPBL Gene-Disease associations (from GenCC):

• Cornelia de Lange syndrome

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• Cornelia de Lange syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: No computational evidence supports a deleterious effect, but strongly conserved according to phyloP
• PP5: Variant 5-36961583-G-GGT is Pathogenic according to our data. Variant chr5-36961583-G-GGT is described in ClinVar as Pathogenic. ClinVar VariationId is 211639.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_133433.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NIPBL	NM_133433.4	MANE Select	c.458+1_458+2dupGT		splice_region intron	N/A	NP_597677.2
	NIPBL	NM_001438586.1		c.458+1_458+2dupGT		splice_region intron	N/A	NP_001425515.1
	NIPBL	NM_015384.5		c.458+1_458+2dupGT		splice_region intron	N/A	NP_056199.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NIPBL	ENST00000282516.13	TSL:1 MANE Select	c.458_458+1insGT		splice_donor intron	N/A	ENSP00000282516.8	Q6KC79-1
	NIPBL	ENST00000448238.2	TSL:1	c.458_458+1insGT		splice_donor intron	N/A	ENSP00000406266.2	Q6KC79-2
	NIPBL	ENST00000652901.1		c.458_458+1insGT		splice_donor intron	N/A	ENSP00000499536.1	A0A590UJS4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 22

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Cornelia de Lange syndrome 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.5
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs797045763; hg19: chr5-36961685;