NM_133433.4:c.5863-10_5863-3dupGTATATAT

Variant names:

• chr5-37036361-A-ATATATATG
• rs1554029659
• NM_133433.4:c.5863-10_5863-3dupGTATATAT

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PVS1_Moderate PM2 BP6_Moderate

The NM_133433.4(NIPBL):​c.5863-10_5863-3dupGTATATAT variant causes a splice acceptor, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: not found (cov: 28)
• Consequence: NIPBL NM_133433.4 splice_acceptor, intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.860
• 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 2 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.01295306 fraction of the gene. Cryptic splice site detected, with MaxEntScore 3.7, offset of 0 (no position change), new splice context is: atgtatatatgtatatatAGttg. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage
• BP6: Variant 5-37036361-A-ATATATATG is Benign according to our data. Variant chr5-37036361-A-ATATATATG is described in ClinVar as Likely_benign. ClinVar VariationId is 211652.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.5863-10_5863-3dupGTATATAT		splice_acceptor intron	N/A	NP_597677.2
	NIPBL	NM_001438586.1		c.5863-10_5863-3dupGTATATAT		splice_acceptor intron	N/A	NP_001425515.1
	NIPBL	NM_015384.5		c.5863-10_5863-3dupGTATATAT		splice_acceptor 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.5863-18_5863-17insTATATATG		intron	N/A	ENSP00000282516.8
	NIPBL	ENST00000448238.2	TSL:1	c.5863-18_5863-17insTATATATG		intron	N/A	ENSP00000406266.2
	NIPBL	ENST00000652901.1		c.5863-18_5863-17insTATATATG		intron	N/A	ENSP00000499536.1

Frequencies

GnomAD3 genomes Cov.: 28

GnomAD4 exome Cov.: 7

GnomAD4 genome Cov.: 28

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.86

Splicing

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

Other links and lift over

dbSNP: rs1554029659; hg19: chr5-37036463;