Evidence map›Paper›PMID 34316024›Full record

Trial reportGenetics in medicine : official journal of the American College of Medical Genetics2021

Tasimelteon safely and effectively improves sleep in Smith-Magenis syndrome: a double-blind randomized trial followed by an open-label extension.

Christos M Polymeropoulos, Justin Brooks, Emily L Czeisler, Michaela A Fisher, Mary M Gibson, Kailey Kite, Sandra P Smieszek, Changfu Xiao, Sarah H Elsea, Gunther Birznieks and 1 more

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Genetics in medicine : official journal of the American College of Medical Genetics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

7 citing papers in PubMed, 17 citations in OpenAlex.

  1. Trial
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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

11 authors at 2 institutions in 1 country.

Christos M PolymeropoulosVanda Pharmaceuticals Inc., Washington, DC, USA.ORCID 0000-0002-8006-0454
Justin BrooksVanda Pharmaceuticals Inc., Washington, DC, USA.
Emily L CzeislerVanda Pharmaceuticals Inc., Washington, DC, USA.
Michaela A FisherVanda Pharmaceuticals Inc., Washington, DC, USA.
Mary M GibsonVanda Pharmaceuticals Inc., Washington, DC, USA.
Kailey KiteVanda Pharmaceuticals Inc., Washington, DC, USA.
Sandra P SmieszekVanda Pharmaceuticals Inc., Washington, DC, USA. sandra.smieszek@vandapharma.com.
Changfu XiaoVanda Pharmaceuticals Inc., Washington, DC, USA.
Sarah H ElseaDepartment of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
Gunther BirznieksVanda Pharmaceuticals Inc., Washington, DC, USA.
Mihael H PolymeropoulosVanda Pharmaceuticals Inc., Washington, DC, USA.
Vanda Pharmaceuticals (United States) · USBaylor College of Medicine · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo assess the efficacy of tasimelteon to improve sleep in Smith-Magenis syndrome (SMS).

methodsA 9-week, double-blind, randomized, two-period crossover study was conducted at four US clinical centers. Genetically confirmed patients with SMS, aged 3 to 39, with sleep complaints participated in the study. Patients were assigned to treatment with tasimelteon or placebo in a 4-week crossover study with a 1-week washout between treatments. Eligible patients participated in an open-label study and were followed for >3 months.

resultsImprovement of sleep quality (DDSQ50) and total sleep time (DDTST50) on the worst 50% of nights were primary endpoints. Secondary measures included actigraphy and behavioral parameters. Over three years, 52 patients were screened, and 25 patients completed the randomized portion of the study. DDSQ50 significantly improved over placebo (0.4, p = 0.0139), and DDTST50 also improved (18.5 minutes, p = 0.0556). Average sleep quality (0.3, p = 0.0155) and actigraphy-based total sleep time (21.1 minutes, p = 0.0134) improved significantly, consistent with the primary outcomes. Patients treated for ≥90 days in the open-label study showed persistent efficacy. Adverse events were similar between placebo and tasimelteon.

conclusionTasimelteon safely and effectively improved sleep in SMS.

Indexed as

Smith-Magenis SyndromeAdolescentAdultBenzofuransChildChild, PreschoolCross-Over StudiesCyclopropanesDouble-Blind MethodHumansSleepTreatment OutcomeYoung AdultBenzofuransCyclopropanestasimelteon

Identifiers

PMID34316024
PMCPMC8629754
OpenAlexW3185410819

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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.