chr5-36975964-A-C

Position:

• chr5-36975964-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_133433.4(NIPBL):​c.1057A>C​(p.Lys353Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,752 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: 0.0000014 (0 hom.)
• Consequence: NIPBL NM_133433.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.94

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 Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), NIPBL. . Gene score misZ 5.5737 (greater than the threshold 3.09). Trascript score misZ 6.6817 (greater than threshold 3.09). GenCC has associacion of gene with Cornelia de Lange syndrome, Cornelia de Lange syndrome 1.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NIPBL	NM_133433.4	c.1057A>C	p.Lys353Gln	missense_variant	9/47	ENST00000282516.13	NP_597677.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NIPBL	ENST00000282516.13	c.1057A>C	p.Lys353Gln	missense_variant	9/47	1	NM_133433.4	ENSP00000282516	P1
NIPBL	ENST00000448238.2	c.1057A>C	p.Lys353Gln	missense_variant	9/46	1		ENSP00000406266
NIPBL	ENST00000652901.1	c.1057A>C	p.Lys353Gln	missense_variant	9/46			ENSP00000499536
NIPBL	ENST00000504430.5	n.677A>C		non_coding_transcript_exon_variant	5/8	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461752 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727172

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000504

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.79
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.11
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.30	T;.
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.96	D;D
M_CAP	Pathogenic	0.61	D
MetaRNN	Uncertain	0.72	D;D
MetaSVM	Pathogenic	0.95	D
MutationAssessor	Uncertain	2.2	M;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.79	T
PROVEAN	Benign	-0.90	N;N
REVEL	Uncertain	0.55
Sift	Pathogenic	0.0	D;D
Sift4G	Benign	0.098	T;D
Polyphen		1.0	D;D
Vest4		0.66
MutPred		0.21		Loss of ubiquitination at K353 (P = 0.0012);Loss of ubiquitination at K353 (P = 0.0012);
MVP		0.83
MPC		0.78
ClinPred		0.92	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.50
gMVP		0.57

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: rs587783879; hg19: chr5-36976066;