PIK3CA Q546H

CI-VAR-00003546Explore in graph →CIViC 5226

Curated evidence

Evidence by cancer (1 items)

Grouped by cancer context first, then therapy. The same variant can be sensitizing in one cancer and irrelevant in another — contexts are never merged. 50 items per page; a cancer group may continue on the next page.

civicCuratedShowing 1–1 of 1 evidence items across 1 cancer context on this page · levels, directions and significance as curated at the source; each row links to its CIViC record.

Molecular profile	Therapy	Type	Level	Direction · significance	Rating (1–5)	Status	Evidence	Source
Malignant Breast Neoplasm1
PIK3CA Q546K OR PIK3CA Q546E OR PIK3CA Q546P OR PIK3CA Q546R OR PIK3CA Q546L OR PIK3CA K111E OR PIK3CA K111N OR PIK3CA K111R OR PIK3CA Q546H	Fulvestrant + Inavolisib + PalbociclibCombination	Predictive	A	Supports Sensitivity Response	3	accepted	EID12536 The phase III INAVO120 trial (NCT04191499) in 325 patients with endocrine-resistant, PIK3CA-mutated HR⁺/HER2⁻ locally advanced or metastatic breast cancer evaluated inavolisib plus palbociclib and ful… (full text at CIViC) PMID 40845250 · Wedam et al., 2025 · Open in CIViC	civic

ClinVar

Clinical significance (0)

ClinVar interpretations are shown as structured records — significance, review status, star rating, conditions — never flattened into one word.

Data not yet available

No ClinVar interpretation attached to this variant.