Evidence map›Paper›PMID 32697890›Full record

ReviewCancer medicine2020

Testing considerations for phosphatidylinositol-3-kinase catalytic subunit alpha as an emerging biomarker in advanced breast cancer.

Deborah L Toppmeyer, Michael F Press

Open access · goldAbstract readReview
In one paragraph

Review in Cancer medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 35% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Significance of phosphoinositide 3-kinase inhibitors in advanced breast cancer: a systematic review and meta-analysis.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2025
    Pooled it
  2. Review
  3. Article
  4. JCO precision oncology · 2022
    Review
  5. Article
  6. Review
  7. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 2 institutions in 1 country.

Deborah L ToppmeyerDepartment of Medicine, Robert Wood Johnson Medical School, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA.ORCID 0000-0002-9378-6094
Michael F PressDepartment of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Rutgers, The State University of New Jersey · USUniversity of Southern California · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Breast cancer is the most common cancer in women, and approximately 71% of carcinomas are hormone receptor-positive (HR+) and human epidermal growth factor receptor 2-not-amplified (HER2-negative). Pathogenesis of breast cancer is associated with dysregulation of several signaling pathways, including the phosphatidylinositol-3-kinase (PI3K) pathway. PIK3CA, the gene encoding PI3K catalytic subunit p110α, is mutated in 20%-40% of breast cancer patients. Several PI3K inhibitors have been developed and one, alpelisib, was recently approved for use in PIK3CA-mutated, HR+, HER2-negative advanced breast cancer. There are numerous types of assays and methods used in clinical studies to determine PIK3CA status in cancers. Additionally, there are several factors to consider for PIK3CA testing in clinical practice, including choice of assay, source of sample, and test timing. In this review, we discuss the use of PIK3CA as a biomarker to guide treatment decisions in patients with HR+, HER2-negative advanced breast cancer, as well as practical considerations and recommendations for testing.

Indexed as

DNA Mutational AnalysisMutationAntineoplastic AgentsBiomarkers, TumorBreast NeoplasmsClass I Phosphatidylinositol 3-KinasesClinical Decision-MakingFemaleHumansPhosphoinositide-3 Kinase InhibitorsPrecision MedicinePredictive Value of TestsPrognosisSignal TransductionAntineoplastic AgentsBiomarkers, TumorClass I Phosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase InhibitorsPIK3CA protein, humanadvanced breast canceralpelisibbiomarkercompanion diagnosticPIK3CA

Identifiers

PMID32697890
PMCPMC7520347
OpenAlexW3044705118

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.