# NM_080822.3(OVCA2):c.65T>C (p.Phe22Ser)

https://sugi.bio/variant/ovca2-p-phe22ser

## Summary

**OVCA2 p.Phe22Ser (c.65T>C)** is classified **Uncertain significance** in OVCA2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-07-31). AlphaMissense: likely pathogenic (0.9623); Very rare (popmax 0.00965%, afr).

**At a glance:** Uncertain significance · review: Single submitter · 1 submitter · AlphaMissense likely pathogenic · very rare (popmax 0.00965%, afr)

## For patients & families {#patients}

This is a change in the OVCA2 gene that is currently of uncertain significance — a definitive interpretation has not yet been established, submitted by 1 submitter.

*Reference information, not medical advice, and not a prediction for any individual. A genetic counselor or clinician can interpret what it means for you and your family.*

**Support & next steps:** [Find a genetic counselor (NSGC)](https://findageneticcounselor.nsgc.org/).

## Identity {#identity}

| Field | Value |
| --- | --- |
| Gene | [OVCA2](https://sugi.bio/atlas/gene/OVCA2/) |
| Protein change (HGVS p.) | p.Phe22Ser |
| Coding change (HGVS c.) | c.65T>C |
| MANE Select transcript | [NM_001383](https://www.ncbi.nlm.nih.gov/nuccore/NM_001383) (variant reported on NM_080822) |
| Variant type | single nucleotide variant |
| Location | chr17:2042112-2042112 (GRCh38) |
| ClinVar | [VCV4129514](https://www.ncbi.nlm.nih.gov/clinvar/variation/4129514/) |

**All HGVS expressions:** `NC_000017.10:g.1945406T>C`, `NC_000017.11:g.2042112T>C`, `NG_051946.1:g.17001T>C`, `NG_194324.1:g.88T>C`, `NM_001346574.1:c.*18+237T>C`, `NM_001346575.1:c.*18+237T>C`, `NM_001346576.2:c.*18+237T>C`, `NM_001383.6:c.*18+237T>C`, `NM_080822.3:c.65T>C`

## Computational & population evidence {#evidence}

**Concordance:** ClinVar classifies this **uncertain**; the computational predictors unanimously lean **damaging** — a triage signal, not a reclassification.

- AlphaMissense **likely pathogenic** (0.9623)
- REVEL 0.94 (strongly pathogenic-leaning) — agrees with AlphaMissense
- SaProt LLR -13.6 (damaging) — agrees with AlphaMissense
- → **In-silico consensus:** AlphaMissense, REVEL and SaProt all call this damaging
- Conservation: phyloP 7.714, GERP 2.35, phastCons 1 — highly conserved (agrees)
- CADD: **PHRED 28.4**. No single ClinGen-calibrated threshold exists and the expert panels that use CADD disagree — GUCY2D/AIPL1 require ≥ 20.0 for an untranslated-region variant, ABCA4 ≥ 28.1 for a synonymous or indel variant, the Pulmonary Hypertension panel imports Pejaver 2022's missense-calibrated numbers, and the Antibody Deficiencies panel declines CADD entirely for PIK3CD. CADD v1.7 also incorporates Zoonomia phyloP, so it partly re-expresses the conservation above. *Descriptive; no threshold applied.*
- Regional missense constraint: **o/e 1.25** across the covering region of the MANE Select transcript (2,042,048–2,043,101), spanning 1,053 bp. Chi-square p 1.3e-05. Describes the region, not this allele; gnomAD v4.1.1's own constrained determination. *Descriptive; no ACMG code applied.*
- SpliceAI: **not looked up on this page** — it was served without the gene's SpliceAI index, so no lookup was made. This is a gap in this page, not in the data, and says nothing about whether a splicing effect is predicted.
- Population frequency (gnomAD v4.1): grpmax **0.00965%** (afr) · FAF95 0.0045% · FAF99 0.00317% · 7/72,504 in the highest group · 7/1,568,128 alleles overall — very rare (popmax 0.00965%, afr).

*Computational predictors are not independent (ClinGen Variant Classification guidance): AlphaMissense (Cheng et al. 2023) carries the ACMG weight for missense and conservation (phyloP/GERP/phastCons) for non-missense; REVEL (Pejaver-2022 calibrated strength bands) and SaProt (Su et al. 2023, structure-aware, ClinVar-independent protein language model, raw LLR) are shown as orthogonal agreement signals, not additive. For frequency, the gnomAD v4.1 grpmax filtering allele frequency (FAF95) is ClinGen's designated BA1/BS1 input (gnomAD v4 guidance v3.0, June 2025); BA1/BS1 thresholds are disease-specific, not a blanket 5%. Predictions, not a clinical determination.*

## Clinical significance {#significance}

**Uncertain significance** — review status Single submitter *(criteria provided, single submitter)*, last evaluated 2025-07-31.

**Submitter consensus:** unanimous (1/1 Uncertain significance).

### Submitter classifications {#submitters}

| Submitter | Classification | Review | Method | Date |
| --- | --- | --- | --- | --- |
| Ambry Genetics | Uncertain significance | criteria provided, single submitter | clinical testing | 2025-07-31 |

**Reported phenotype names (ClinVar):** not specified, AllHighlyPenetrant.

### Data sources & attribution {#sources}

ClinVar (NCBI — public domain, built 2026-10-11); gnomAD v4.1 (Broad Institute, built 2026-10-06); AlphaMissense (Cheng et al. 2023, © Google DeepMind — CC BY 4.0, built 2026-01-27); REVEL (Ioannidis et al. 2016 — ODbL, built 2026-07-13); SaProt (Su et al. 2023 — MIT, built 2026-07-14); SpliceAI (Illumina — free for non-commercial use, built 2026-10-13); CADD (Rentzsch et al. 2019, University of Washington — free for non-commercial use, built 2026-10-10); Conservation (phyloP/phastCons/GERP) (UCSC hg38 470-way mammal (Hiller Lab) + Ensembl Compara, built 2026-07-12); gnomAD Non-coding Constraint (Gnocchi) (Chen et al. 2024, Broad Institute — CC0, built 2026-10-11); gnomAD Regional Missense Constraint (Broad Institute — CC0, built 2026-10-13); Pangolin (Zeng & Li 2022 — CC BY 4.0, built 2026-10-11); Repeat regions (UCSC — RepeatMasker, TRF, segmental duplications, built 2026-10-11); ClinGen (ClinGen, built 2026-09-22); UniProt (CC BY 4.0); Reactome / GO (CC BY 4.0, built 2026-09-23); MaveDB (per-record license, built 2026-10-11); CIViC (CC0, built 2026-09-22); Orphanet (Orphanet, built 2026-06-12)

*Primary record: NCBI ClinVar (variation 4129514). Classifications reflect these databases as of the page's build date and may change. Free reference use — not medical advice; consult the primary submitters and a clinician.*