Evidence map›Paper›PMID 26299612›Full record

ArticleOncotarget2015

The metastatic infiltration at the metastasis/brain parenchyma-interface is very heterogeneous and has a significant impact on survival in a prospective study.

Laila Siam, Annalen Bleckmann, Han-Ning Chaung, Alexander Mohr, Florian Klemm, Alonso Barrantes-Freer, Raquel Blazquez, Hendrik A Wolff, Florian Lüke, Veit Rohde and 2 more

Abstract readComparative Study
In one paragraph

Article in Oncotarget, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

67 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  17. Current preclinical models of brain metastasis.Clinical & experimental metastasis · 2024
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7 more citing papers are in PubMed but not listed here.

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

12 authors.

Laila SiamDepartment of Neurosurgery, University Medical Center, Göttingen, Germany.
Annalen BleckmannDepartment of Hematology and Medical Oncology, University Medical Center, Göttingen, Germany.
Han-Ning ChaungDepartment of Hematology and Medical Oncology, University Medical Center, Göttingen, Germany.
Alexander MohrDepartment of Neuroradiology, University Medical Center, Göttingen, Germany.
Florian KlemmDepartment of Hematology and Medical Oncology, University Medical Center, Göttingen, Germany.
Alonso Barrantes-FreerInstitute of Neuropathology, University Medical Center, Göttingen, Germany.
Raquel BlazquezDepartment of Hematology and Medical Oncology, University Medical Center, Göttingen, Germany.
Hendrik A WolffDepartment of Radiotherapy and Radiation Oncology, University Medical Center, Göttingen, Germany.
Florian LükeDepartment of Internal Medicine III, Hematology and Medical Oncology, University Hospital Regensburg, Regensburg, Germany.
Veit RohdeDepartment of Neurosurgery, University Medical Center, Göttingen, Germany.
Christine StadelmannInstitute of Neuropathology, University Medical Center, Göttingen, Germany.
Tobias PukropDepartment of Hematology and Medical Oncology, University Medical Center, Göttingen, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

unlabelledThe current approach to brain metastases resection is macroscopic removal of metastasis until reaching the glial pseudo-capsule (gross total resection (GTR)). However, autopsy studies demonstrated infiltrating metastatic cells into the parenchyma at the metastasis/brain parenchyma (M/BP)-interface. AIMS/

methodsTo analyze the astrocyte reaction and metastatic infiltration pattern at the M/BP-interface with an organotypic brain slice coculture system. Secondly, to evaluate the significance of infiltrating metastatic tumor cells in a prospective biopsy study. Therefore, after GTR, biopsies were obtained from the brain parenchyma beyond the glial pseudo-capsule and analyzed histomorphologically.

resultsThe coculture revealed three types of cancer cell infiltration. Interestingly, the astrocyte reaction was significantly different in the coculture with a benign, neuroectodermal-derived cell line. In the prospective biopsy study 58/167 (34.7%) samples revealed infiltrating metastatic cells. Altogether, 25/39 patients (64.1%) had proven to exhibit infiltration in at least one biopsy specimen with significant impact on survival (OS) (3.4 HR; p = 0.009; 2-year OS was 6.6% versus 43.5%). Exceptionally, in the non-infiltrating cohort three patients were long-term survivors.

conclusionsMetastatic infiltration has a significant impact on prognosis. Secondly, the astrocyte reaction at the M/BP-interface is heterogeneous and supports our previous concept of the organ-specific defense against metastatic (organ-foreign) cells.

Indexed as

Cell MovementAgedAstrocytesBiomarkers, TumorBiopsyBrainBrain NeoplasmsBreast NeoplasmsCarcinoma, Non-Small-Cell LungCell ProliferationCoculture TechniquesFemaleHumansKaplan-Meier EstimateLung NeoplasmsMaleBiomarkers, Tumorastrocytesbrain metastasisglial-pseudo capsulemetastatic infiltrationorgan-specific defense

Identifiers

PMID26299612
PMCPMC4745724

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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.