NM_017950.4:c.29+1_29+13dupGTAAGCCGGGCCG

Variant names:

• chr17-80036684-G-GCGGGCCGGTAAGC
• rs771732758
• NM_017950.4:c.29+1_29+13dupGTAAGCCGGGCCG

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP6_Moderate

The NM_017950.4(CCDC40):​c.29+1_29+13dupGTAAGCCGGGCCG variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000105 in 1,462,272 control chromosomes in the GnomAD database, with no homozygous occurrence. It is difficult to determine the true allele frequency of this variant because it is of type INS_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.00053 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000056 (0 hom.)
• Consequence: CCDC40 NM_017950.4 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.0240
• Publications: 0 publications found

Genes affected

CCDC40 (HGNC:26090): (coiled-coil domain 40 molecular ruler complex subunit) This gene encodes a protein that is necessary for motile cilia function. It functions in correct left-right axis formation by regulating the assembly of the inner dynein arm and the dynein regulatory complexes, which control ciliary beat. Mutations in this gene cause ciliary dyskinesia type 15, a disorder due to defects in cilia motility. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2011]

CCDC40 Gene-Disease associations (from GenCC):

• primary ciliary dyskinesia 15

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia, Laboratory for Molecular Medicine
• primary ciliary dyskinesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autoimmune disease

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP6: Variant 17-80036684-G-GCGGGCCGGTAAGC is Benign according to our data. Variant chr17-80036684-G-GCGGGCCGGTAAGC is described in ClinVar as [Likely_benign]. Clinvar id is 454886.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CCDC40	NM_017950.4	c.29+1_29+13dupGTAAGCCGGGCCG		intron_variant	Intron 1 of 19	ENST00000397545.9	NP_060420.2
CCDC40	NM_001243342.2	c.29+1_29+13dupGTAAGCCGGGCCG		intron_variant	Intron 1 of 17		NP_001230271.1
CCDC40	NM_001330508.2	c.29+1_29+13dupGTAAGCCGGGCCG		intron_variant	Intron 1 of 10		NP_001317437.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CCDC40	ENST00000397545.9	c.29+1_29+13dupGTAAGCCGGGCCG		intron_variant	Intron 1 of 19	5	NM_017950.4	ENSP00000380679.4

Frequencies

GnomAD3 genomes AF: 0.000533 AC: 81 AN: 152058 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00191

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000654

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.0000308 AC: 3 AN: 97410 AF XY: 0.00

Gnomad AFR exome AF: 0.000727

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000242

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000557 AC: 73 AN: 1310102 Hom.: 0 Cov.: 31 AF XY: 0.0000404 AC XY: 26 AN XY: 644020

African (AFR) AF: 0.00243 AC: 67 AN: 27612

American (AMR) AF: 0.00 AC: 0 AN: 26818

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 22812

East Asian (EAS) AF: 0.00 AC: 0 AN: 30070

South Asian (SAS) AF: 0.00 AC: 0 AN: 70400

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 31796

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5172

European-Non Finnish (NFE) AF: 9.60e-7 AC: 1 AN: 1041274

Other (OTH) AF: 0.0000923 AC: 5 AN: 54148

GnomAD4 genome AF: 0.000526 AC: 80 AN: 152170 Hom.: 0 Cov.: 32 AF XY: 0.000457 AC XY: 34 AN XY: 74390

African (AFR) AF: 0.00188 AC: 78 AN: 41554

American (AMR) AF: 0.0000654 AC: 1 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5140

South Asian (SAS) AF: 0.00 AC: 0 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10612

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 292

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67958

Other (OTH) AF: 0.000473 AC: 1 AN: 2112

Alfa AF: 0.000422 Hom.: 0

Asia WGS AF: 0.000867 AC: 3 AN: 3476

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Primary ciliary dyskinesia Benign:1

Sep 11, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.024
Mutation Taster		=33/167	disease causing (fs/PTC)

Splicing

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

Other links and lift over

dbSNP: rs771732758; hg19: chr17-78010483;