1-169421806-A-G

Position:

• chr1-169421806-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001300969.2(CCDC181):​c.625T>C​(p.Cys209Arg) 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 benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CCDC181 NM_001300969.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.457

Genes affected

CCDC181 (HGNC:28051): (coiled-coil domain containing 181) Predicted to enable microtubule binding activity. Predicted to be located in manchette and sperm flagellum. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.07884571).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CCDC181	NM_001300969.2	c.625T>C	p.Cys209Arg	missense_variant	3/6	ENST00000367806.8	NP_001287898.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CCDC181	ENST00000367806.8	c.625T>C	p.Cys209Arg	missense_variant	3/6	1	NM_001300969.2	ENSP00000356780	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 21, 2022

The c.625T>C (p.C209R) alteration is located in exon 3 (coding exon 2) of the CCDC181 gene. This alteration results from a T to C substitution at nucleotide position 625, causing the cysteine (C) at amino acid position 209 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.091
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	5.4
DANN	Benign	0.52
DEOGEN2	Benign	0.0090	T;.;.;.;.
Eigen	Benign	-0.60
Eigen_PC	Benign	-0.62
FATHMM_MKL	Benign	0.039	N
LIST_S2	Benign	0.58	T;.;T;T;T
M_CAP	Benign	0.0082	T
MetaRNN	Benign	0.079	T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.4	M;M;M;M;.
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.32	T
PROVEAN	Benign	-0.10	N;N;N;.;N
REVEL	Benign	0.046
Sift	Benign	0.49	T;T;T;.;T
Sift4G	Benign	0.26	T;T;T;T;T
Polyphen		0.20	B;B;B;B;.
Vest4		0.20
MutPred		0.39		Gain of disorder (P = 0.0183);Gain of disorder (P = 0.0183);Gain of disorder (P = 0.0183);Gain of disorder (P = 0.0183);Gain of disorder (P = 0.0183);
MVP		0.31
MPC		0.35
ClinPred		0.18	T
GERP RS		2.8
Varity_R		0.28
gMVP		0.035

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-169391044;