19-41320416-C-T

Variant summary

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

The NM_052848.3(CCDC97):c.857C>T(p.Thr286Ile) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CCDC97 NM_052848.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.58

Genes affected

CCDC97 (HGNC:28289): (coiled-coil domain containing 97)

TGFB1 (HGNC:11766): (transforming growth factor beta 1) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate a latency-associated peptide (LAP) and a mature peptide, and is found in either a latent form composed of a mature peptide homodimer, a LAP homodimer, and a latent TGF-beta binding protein, or in an active form consisting solely of the mature peptide homodimer. The mature peptide may also form heterodimers with other TGFB family members. This encoded protein regulates cell proliferation, differentiation and growth, and can modulate expression and activation of other growth factors including interferon gamma and tumor necrosis factor alpha. This gene is frequently upregulated in tumor cells, and mutations in this gene result in Camurati-Engelmann disease. [provided by RefSeq, Aug 2016]

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=0.1773873).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CCDC97	NM_052848.3	c.857C>T	p.Thr286Ile	missense_variant	4/5	ENST00000269967.4
CCDC97	NM_001346100.2	c.662C>T	p.Thr221Ile	missense_variant	4/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CCDC97	ENST00000269967.4	c.857C>T	p.Thr286Ile	missense_variant	4/5	1	NM_052848.3	P1
CCDC97	ENST00000600918.1	c.197C>T	p.Thr66Ile	missense_variant	2/2	2
TGFB1	ENST00000598758.5	n.302+11712G>A		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

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

Dec 07, 2021

The c.857C>T (p.T286I) alteration is located in exon 4 (coding exon 4) of the CCDC97 gene. This alteration results from a C to T substitution at nucleotide position 857, causing the threonine (T) at amino acid position 286 to be replaced by an isoleucine (I). 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	0.21
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.48
Cadd	Uncertain	23
Dann	Uncertain	1.0
DEOGEN2	Benign	0.025	T
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.052
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.0014	T
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.57	N
MutationTaster	Benign	0.69	D
PrimateAI	Uncertain	0.62	T
PROVEAN	Benign	1.6	N
REVEL	Benign	0.070
Sift	Benign	0.82	T
Sift4G	Benign	0.57	T
Polyphen		0.13	B
Vest4		0.32
MutPred		0.32		Loss of phosphorylation at T286 (P = 0.0359);
MVP		0.39
MPC		0.81
ClinPred		0.61	D
GERP RS		4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.058
gMVP		0.10

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: chr19-41826321;