Evidence map›Paper›PMID 22574156›Full record

SynthesisPloS one2012

Meta-analysis on the effects of octreotide on tumor mass in acromegaly.

Andrea Giustina, Gherardo Mazziotti, Valter Torri, Maurizio Spinello, Irene Floriani, Shlomo Melmed

Abstract readMeta-Analysis
In one paragraph

Synthesis in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 4 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

78 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Guideline
  4. Pooled it
  5. Trial
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  9. Article
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  15. Article
  16. Acromegaly: diagnostic challenges and individualized treatment.Expert review of endocrinology & metabolism · 2025
    Review
  17. Article
  18. Review
  19. Article
  20. Article

18 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

6 authors.

Andrea GiustinaDepartment of Medical and Surgical Sciences, University of Brescia, Montichiari Hospital, Brescia, Italy. a.giustina@libero.it
Gherardo Mazziotti
Valter Torri
Maurizio Spinello
Irene Floriani
Shlomo Melmed

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe long-acting somatostatin analogue octreotide is used either as an adjuvant or primary therapy to lower growth hormone (GH) levels in patients with acromegaly and may also induce pituitary tumor shrinkage.

objectiveWe performed a meta-analysis to accurately assess the effect of octreotide on pituitary tumor shrinkage. DATA SOURCES: A computerized Medline and Embase search was undertaken to identify potentially eligible studies. STUDY ELIGIBILITY CRITERIA: Eligibility criteria included treatment with octreotide, availability of numerical metrics on tumor shrinkage and clear definition of a clinically relevant reduction in tumor size. Primary endpoints included the proportion of patients with tumor shrinkage and mean percentage reduction in tumor volume. DATA EXTRACTION AND ANALYSIS: The electronic search identified 2202 articles. Of these, 41 studies fulfilling the eligibility criteria were selected for data extraction and analysis. In total, 1685 patients were included, ranging from 6 to 189 patients per trial. For the analysis of the effect of octreotide on pituitary tumor shrinkage a random effect model was used to account for differences in both effect size and sampling error.

resultsOctreotide was shown to induce tumor shrinkage in 53.0% [95% CI: 45.0%-61.0%] of treated patients. In patients treated with the LAR formulation of octreotide, this increased to 66.0%, [95% CI: 57.0%-74.0%). In the nine studies in which tumor shrinkage was quantified, the overall weighted mean percentage reduction in tumor size was 37.4% [95% CI: 22.4%-52.4%], rising to 50.6% [95% CI: 42.7%-58.4%] with octreotide LAR. LIMITATIONS: Most trials examined were open-label and had no control group.

conclusionsOctreotide LAR induces clinically relevant tumor shrinkage in more than half of patients with acromegaly.

Indexed as

AcromegalyAdolescentAdultAgedAged, 80 and overAntineoplastic AgentsClinical Trials as TopicFemaleHumansMaleMiddle AgedOctreotidePituitary NeoplasmsTumor BurdenYoung AdultAntineoplastic AgentsOctreotide

Identifiers

PMID22574156
PMCPMC3344864

What OpenQuestion holds

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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.