Evidence map›Paper›PMID 27330919›Full record

ArticleSpringerPlus2016

The AVOCAT study: Bicalutamide monotherapy versus combined bicalutamide plus dutasteride therapy for patients with locally advanced or metastatic carcinoma of the prostate-a long-term follow-up comparison and quality of life analysis.

Siebren Dijkstra, Wim P J Witjes, Erik P M Roos, Peter L M Vijverberg, Arno D H Geboers, Jos L Bruins, Geert A H J Smits, Henk Vergunst, Peter F A Mulders

Open access · diamondAbstract read
In one paragraph

Article in SpringerPlus, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.8field-weighted citation impact, top 24% 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

1 citing paper in PubMed, 7 citations in OpenAlex.

  1. Article
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

9 authors at 6 institutions in 1 country.

Siebren DijkstraDepartment of Urology, Radboud University Medical Center, Geert Grooteplein Zuid 10, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands.
Wim P J WitjesDepartment of Urology, Radboud University Medical Center, Geert Grooteplein Zuid 10, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands.
Erik P M RoosDepartment of Urology, Antonius Hospital, Bolswarderbaan 1, P.O. Box 20.000, 8600 BA Sneek, The Netherlands.
Peter L M VijverbergDepartment of Urology, St. Antonius Hospital, Koekoekslaan 1, P.O. Box 2500, 3435 CM Nieuwegein, The Netherlands.
Arno D H GeboersDepartment of Urology, Slingeland Hospital, Kruisbergseweg 25, P.O. Box 169, 7000 AD Doetinchem, The Netherlands.
Jos L BruinsDepartment of Urology, Koningin Beatrix Hospital, Beatrixpark 1, P.O. Box 9005, 7100 GG Winterswijk, The Netherlands.
Geert A H J SmitsDepartment of Urology, Rijnstate Hospital, Wagnerlaan 55, P.O. Box 9555, 6800 TA Arnhem, The Netherlands.
Henk VergunstDepartment of Urology, Canisius Wilhelmina Hospital, Weg Door Jonkerbos 100, P.O. Box 9015, 6532 SZ Nijmegen, The Netherlands.
Peter F A MuldersDepartment of Urology, Radboud University Medical Center, Geert Grooteplein Zuid 10, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands.
Radboud University Medical Center · NLSt. Antonius Ziekenhuis · NLCanisius-Wilhelmina Ziekenhuis · NLRijnstate Hospital · NLSlingeland Ziekenhuis · NLStreekziekenhuis Koningin Beatrix · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeCompare the efficacy and tolerability of dutasteride in combination with bicalutamide to bicalutamide monotherapy in the treatment of locally advanced and metastatic prostate cancer (PCa).

methodsOne-hundred-fifty PCa patients with locally advanced or metastatic disease were prospectively enrolled and randomly assigned to receive either bicalutamide monotherapy 150 mg once daily (79 patients) or bicalutamide 150 mg plus dutasteride 0.5 mg once daily (71 patients). Treatment response was assessed by serum PSA level measurement, and standard procedures for diagnosis of clinical progression were used during follow-up. Patient-reported quality of life (QoL) was assessed using validated questionnaires (EORTC QLQ-C30 and QLQ-PR25).

resultsAt 3 years follow-up, PSA progression was found in 52 patients [65.8 %; 95 % confidence interval (CI) 55.4-76.3] in the monotherapy group compared to 38 patients (53.5 %; 95 % CI 41.9-65.1) in the combined therapy group (p = 0.134). At the time of analysis 37 men (46.8 %; 95 % CI 35.8-57.8) in the monotherapy group had died versus 30 men (42.3 %; 95 % CI 30.8-53.7) in the combined therapy group. Median survival time was 5.4 and 5.8 years, respectively (p = 0.694). There was no statistically significant difference in the presentation frequency of adverse events between groups (p = 0.683). QoL was good and comparable between the two groups.

conclusionsBoth therapies were well tolerated with a good QoL. However, despite a trend toward higher efficacy of the combined therapy, progression-free survival and overall survival was not significantly different between the groups. Further research on this therapy should be performed.

Indexed as

5α-Reductase inhibitorBicalutamideDutasterideOverall survivalProstate cancerPSA progression

Identifiers

PMID27330919
PMCPMC4870485
OpenAlexW2407997809

What OpenQuestion holds

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LicenceCC BY
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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.