chr16-3655869-C-G

Variant names:

• chr16-3655869-C-G
• rs557122880
• NM_005223.4:c.168C>G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_005223.4(DNASE1):​c.168C>G​(p.Ile56Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: DNASE1 NM_005223.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.51

Genes affected

DNASE1 (HGNC:2956): (deoxyribonuclease 1) This gene encodes a member of the DNase family. This protein is stored in the zymogen granules of the nuclear envelope and functions by cleaving DNA in an endonucleolytic manner. At least six autosomal codominant alleles have been characterized, DNASE1*1 through DNASE1*6, and the sequence of DNASE1*2 represented in this record. Mutations in this gene have been associated with systemic lupus erythematosus (SLE), an autoimmune disease. A recombinant form of this protein is used to treat the one of the symptoms of cystic fibrosis by hydrolyzing the extracellular DNA in sputum and reducing its viscosity. Alternate transcriptional splice variants of this gene have been observed but have not been thoroughly characterized. [provided by RefSeq, Jul 2008]

LOC124903631 (HGNC:):

TRAP1 (HGNC:16264): (TNF receptor associated protein 1) This gene encodes a mitochondrial chaperone protein that is member of the heat shock protein 90 (HSP90) family. The encoded protein has ATPase activity and interacts with tumor necrosis factor type I. This protein may function in regulating cellular stress responses. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jan 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.931

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNASE1	NM_005223.4	c.168C>G	p.Ile56Met	missense_variant	Exon 3 of 9	ENST00000246949.10	NP_005214.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNASE1	ENST00000246949.10	c.168C>G	p.Ile56Met	missense_variant	Exon 3 of 9	1	NM_005223.4	ENSP00000246949.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Benign	3.8
DANN	Uncertain	0.98
DEOGEN2	Pathogenic	0.80	D;D
Eigen	Benign	-0.75
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.24	N
LIST_S2	Benign	0.83	.;T
M_CAP	Benign	0.040	D
MetaRNN	Pathogenic	0.93	D;D
MetaSVM	Uncertain	0.78	D
MutationAssessor	Pathogenic	3.4	M;M
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-2.2	N;N
REVEL	Uncertain	0.55
Sift	Uncertain	0.0010	D;D
Sift4G	Uncertain	0.0030	D;D
Polyphen		1.0	D;D
Vest4		0.74
MutPred		0.72		Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);
MVP		0.54
MPC		0.030
ClinPred		1.0	D
GERP RS		-9.9
Varity_R		0.79
gMVP		0.80

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.18		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: rs557122880; hg19: chr16-3705870;