Evidence map›Paper›PMID 33954116›Full record

ArticleFrontiers in oncology2021

Efficacy of PSMA PET-Guided Radiotherapy for Oligometastatic Castrate-Resistant Prostate Cancer.

Christoph Henkenberens, Thorsten Derlin, Frank Bengel, Tobias L Ross, Markus A Kuczyk, Frank A Giordano, Gustavo R Sarria, Leonard Christopher Schmeel, Hans Christiansen, Christoph A J von Klot

Abstract read
In one paragraph

Article in Frontiers in oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. PSMA PET-CT in the Diagnosis and Staging of Prostate Cancer.Diagnostics (Basel, Switzerland) · 2022
    Review
  8. Article
  9. 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

10 authors.

Christoph HenkenberensDepartment of Radiotherapy and Special Oncology, Hannover Medical School, Hannover, Germany.
Thorsten DerlinDepartment of Nuclear Medicine, Hannover Medical School, Hannover, Germany.
Frank BengelDepartment of Nuclear Medicine, Hannover Medical School, Hannover, Germany.
Tobias L RossDepartment of Nuclear Medicine, Hannover Medical School, Hannover, Germany.
Markus A KuczykDepartment of Urology and Urologic Oncology, Hannover Medical School, Hannover, Germany.
Frank A GiordanoDepartment of Radiation Oncology, University Hospital Bonn, Bonn, Germany.
Gustavo R SarriaDepartment of Radiation Oncology, University Hospital Bonn, Bonn, Germany.
Leonard Christopher SchmeelDepartment of Radiation Oncology, University Hospital Bonn, Bonn, Germany.
Hans ChristiansenDepartment of Radiotherapy and Special Oncology, Hannover Medical School, Hannover, Germany.
Christoph A J von KlotDepartment of Urology and Urologic Oncology, Hannover Medical School, Hannover, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo assess the outcome of radiotherapy (RT) to all PSMA ligand positive metastases for patients with castrate-resistant prostate cancer (mCRPC). PATIENTS AND

methodsA total of 42 patients developed oligometastatic mCRPC and received PSMA PET-guided RT of all metastases. The main outcome parameters were biochemical progression-free survival (bPFS), and second-line systemic treatment free survival (SST-FS).

resultsA total of 141 PSMA ligand-positive metastases were irradiated. The median follow-up time was 39.0 months (12-58 months). During the follow-up five out of 42 (11.9%) patients died of progressive mPCa. Five out of 42 (11.9%) patients showed no biochemical responses and presented with a PSA level ≥10% of the baseline PSA at first PSA level measurement after RT and were classified as non-responders. The median PSA level before RT was 4.79 ng/mL (range, 0.4-46.1), which decreased significantly to a median PSA nadir level of 0.39 ng/mL (range, <0.07-32.8; p=0.002). The median PSA level at biochemical progression after PSMA ligand-based RT was 2.75 ng/mL (range, 0.27-53.0; p=0.24) and was not significantly different (p=0.29) from the median PSA level (4.79 ng/mL, range, 0.4-46.1) before the PSMA ligand-based RT. The median bPFS was 12.0 months after PSMA ligand PET-based RT (95% CI, 11.2-15.8) and the median SST-FS was 15.0 months (95% CI, 14.0-21.5).

conclusionIn well-informed and closely followed-up patients, PSMA PET-guided RT represents a viable treatment option for patients with oligometastatic mCRPC to delay further systemic therapies.

Indexed as

castrate-resistantmetastasis-directed therapyoligometastasesPSMAradiotherapy

Identifiers

PMID33954116
PMCPMC8089391

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Registered trials

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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.