chr5-37064967-C-CAA

Variant names:

• chr5-37064967-C-CAA
• rs587783876
• NM_133433.4:c.*83_*84dupAA

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_133433.4(NIPBL):​c.*83_*84dupAA variant causes a 3 prime UTR change. The variant allele was found at a frequency of 0.000000724 in 1,381,862 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: NIPBL NM_133433.4 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.35
• 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.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NIPBL	NM_133433.4	c.*83_*84dupAA		3_prime_UTR_variant	Exon 47 of 47	ENST00000282516.13	NP_597677.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NIPBL	ENST00000282516.13	c.*83_*84dupAA		3_prime_UTR_variant	Exon 47 of 47	1	NM_133433.4	ENSP00000282516.8
NIPBL	ENST00000514335.1	n.2421_2422dupAA		non_coding_transcript_exon_variant	Exon 7 of 7	2
NIPBL	ENST00000652901.1	c.*442_*443dupAA		3_prime_UTR_variant	Exon 46 of 46			ENSP00000499536.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.24e-7 AC: 1 AN: 1381862 Hom.: 0 Cov.: 23 AF XY: 0.00000145 AC XY: 1 AN XY: 689790

African (AFR) AF: 0.00 AC: 0 AN: 30374

American (AMR) AF: 0.00 AC: 0 AN: 38114

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24684

East Asian (EAS) AF: 0.00 AC: 0 AN: 38932

South Asian (SAS) AF: 0.0000125 AC: 1 AN: 80300

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48636

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5462

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1058184

Other (OTH) AF: 0.00 AC: 0 AN: 57176

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		5.3
Mutation Taster		=100/0	polymorphism

Splicing

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

Other links and lift over

dbSNP: rs587783876; hg19: chr5-37065069;