ArticleScientific reports2021
Discordance of PIK3CA and TP53 mutations between breast cancer brain metastases and matched primary tumors.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 16 citations in OpenAlex.
- Molecular and Clinicopathological Biomarkers Predicting Brain Metastasis in Triple-Negative Breast Cancer: A Systematic Review.International journal of molecular sciences · 2026Pooled it
- Discordance of PIK3CA mutational status between primary and metastatic breast cancer: a systematic review and meta-analysis.Breast cancer research and treatment · 2023Pooled it
- Cerebrospinal fluid circulating tumor DNA profiling in central nervous system metastases from solid tumors: A prospective multicentre translational analysis of the BrainStorm (OncoDistinct-006) study.The journal of liquid biopsy · 2026Article
- Feasibility ofGeburtshilfe und Frauenheilkunde · 2026Article
- Novel treatment strategies and key research priorities for patients with breast cancer and central nervous system (CNS) metastases.NPJ breast cancer · 2025Review
- Review
- Identifying American climate change free riders and motivating sustainable behavior.Scientific reports · 2024Article
- Pulmonary Adenocarcinoma In Situ and Minimally Invasive Adenocarcinomas in European Patients Have LessInternational journal of molecular sciences · 2024Article
- Genomic Landscape of Normal and Breast Cancer Tissues in a Hungarian Pilot Cohort.International journal of molecular sciences · 2023Article
- A review on genetic alterations in CNS metastases related to breast cancer treatment. Is there a role for liquid biopsies in CSF?Journal of neuro-oncology · 2023Review
- Review
- PIK3CAMutations in Breast Cancer Subtypes Other Than HR-Positive/HER2-Negative.Journal of personalized medicine · 2022Article
- Intrathecal therapy for the management of leptomeningeal metastatic disease: a scoping review of the current literature and ongoing clinical trials.Journal of neuro-oncology · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
There is limited knowledge of the biology of breast cancer (BC) brain metastasis (BM). We primarily aimed to determine the mutations in BCBM and to compare the mutational pattern with the matched primary breast cancer (BC). Secondary aims were to determine mutations in each subgroup (Luminal A-/B-like, HER2+ and TNBC) of BCBM, and to determine survival according to specific mutations. We investigated 57 BCBMs, including 46 cases with matched primary tumors (PT) by targeted Next Generation Sequencing (NGS) using the Cancer Hotspot Panel v2 (ThermoFisher Scientific) covering 207 targeted regions in 50 cancer related genes. Subtype according to immunohistochemistry was re-evaluated. NGS results fulfilling sequencing quality criteria were obtained from 52 BM and 41 PT, out of which 37 were matched pairs. Pathogenic mutations were detected in 66% of PTs (27/41), and 62% of BMs (32/52). TP53 mutations were most frequent; 49% (20/41) of PTs and 48% (25/52) in BMs, followed by PIK3CA mutations; 22% (9/42) in PTs and 25% (13/52) in BMs. Mutations in CDH1, EGFR, HRAS, RB1 CDKN2A and PTEN were detected in single pairs or single samples. Mutational pattern was discordant in 24% of matched pairs. We show a discordance of PIK3CA and TP53 mutations of roughly 25% indicating the need to develop methods to assess mutational status in brain metastasis where analysis of cell-free DNA from cerebrospinal fluid (CSF) has shown promising results.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.