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Functional Dyspepsia (FD) - Clinical Response to Montelukast in Children

15. maj 2019 opdateret af: Craig A. Friesen, MD, Children's Mercy Hospital Kansas City

Predictors of Clinical Response to Montelukast in Children With Functional Dyspepsia

Duodenal eosinophilia has been associated with dyspepsia in adults and the investigators have previously described the finding of duodenal mucosal eosinophilia in 71-79% of children undergoing diagnostic endoscopy. Previous studies in children have shown positive response to montelukast with approximately 50% finding complete relief and 20-30 percent showing no response.

There are a number of factors that have the potential to contribute to the observed variability in response to montelukast. These include variability in:

  1. systemic drug exposure (drug absorption, biotransformation and/or elimination)
  2. regulation of leukotriene biosynthesis
  3. cysteinyl leukotriene receptors and downstream mediators
  4. patient disease phenotype (e.g. Functional Gastrointestinal Disorder (FGID) disease classification, psychologic profile)

In this study, the investigators propose to utilize biopsy specimens stratified by drug response to identify candidate gene expression modules that will be validated in a prospective study design. The overall goal of this program is to develop a signature of montelukast response that can be applied not only to eosinophilic gastroenteritis, but more generally to other diseases, such as asthma, where the drug is widely used with variable success.

Studieoversigt

Status

Afsluttet

Betingelser

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

18

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Missouri
      • Kansas City, Missouri, Forenede Stater, 64108
        • Children's Mercy

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

8 år til 17 år (Barn)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Up to 50 subjects (allowance of 20 additional subjects for screen fails and those who will not complete Phase 3 of the study) will be recruited from a cohort of patients referred to the Abdominal Pain Clinic at Children's Mercy Hospitals and Clinics and enrolled prior to routine initial endoscopy.

Beskrivelse

Inclusion Criteria:

  • Ages 8 - 17 years, inclusive
  • Abdominal pain of at least 8 weeks duration and fulfilling symptom- based criteria for functional dyspepsia
  • Scheduled for endoscopy following failure to respond to acid-reduction therapy
  • Evidence of written parental permission (consent) and subject assent

Exclusion Criteria:

  • Previous treatment with montelukast
  • Treatment with corticosteroids or oral cromolyn sodium in the four weeks prior to enrollment
  • Prior history or clinical signs/symptoms of chronic disease requiring regular medical care (e.g., diabetes mellitus, juvenile idiopathic arthritis, cystic fibrosis or cancer)
  • Exposure within the past two weeks to drugs or natural products that induce CYP2C8/9 or CYP3A4, including amprenavir, carbamazepine, lopinavir/ritonavir, nafcillin, nevirapine, oxcarbazepine, phenobarbital, phenytoin, rifampin, St. John's Wort, or that inhibit CYP2C8/9 or CYP3A4, such as ciprofloxacin, clarithromycin, erythromycin, fluconazole, fluvoxamine, grapefruit juice, paroxetine, sertraline, sulfamethoxazole, trimethoprim
  • A Body Mass Index of 30 or greater
  • Non-English speaking
  • Those patients who will turn 18 during the duration of the study

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Peds/Adol Pts w/ FD - CMH GI APT clinic

Phase 1. Standard-of-Care Endoscopy to establish baseline data and immunohistochemistry studies. Additional biopsies taken for DNA and microarray analysis. If participant biopsies meet criteria (> or = 20/hpf) and no nodularity or tumors, s/he will be eligible to move to second phase.

Phase 2. Standard of care treatment of 3 mg/kg ranitidine bid and 20 mg. montelukast each AM for three weeks. Based on response to global assessment score, participants will be placed in non-responder or responder group. Participants from the responder group will move to final phase of the study.

Phase 3: Research endoscopy to measure response to montelukast therapy. Biopsies taken for cell density counts and immunohistochemistry studies. Additional biopsies taken for DNA and microarray analysis.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Identification of a signature of montelukast response using gene expression patterns in biopsy samples from clinical responders and non-responders to montelukast.
Tidsramme: Approximately 7-8 weeks
Identification of patients who will benefit from montelukast therapy , allowing more efficient, and possibly more effective, care.
Approximately 7-8 weeks

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Characterization a signature of montelukast response using comparison gene expression patterns in biopsy samples obtained before and after montelukast therapy in children with a positive clinical response to the drug.
Tidsramme: 7-8 weeks.
Identification and development of a signature of montelukast response applied to eosinophilic gastroenteritis, and more generally to other diseases, such as asthma, where the drug is widely used with variable success.
7-8 weeks.

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Efterforskere

  • Ledende efterforsker: Craig A. Friesen, MD, Children's Mercy, Division of Gastroenterlogy, Hepatology, and Nutrition
  • Ledende efterforsker: Steven Leeder, PharmD, PhD, Children's Mercy, Division of Clinical Pharmacology and Medical Toxicology

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. august 2014

Primær færdiggørelse (Faktiske)

1. august 2016

Studieafslutning (Faktiske)

1. august 2016

Datoer for studieregistrering

Først indsendt

3. september 2014

Først indsendt, der opfyldte QC-kriterier

5. februar 2015

Først opslået (Skøn)

11. februar 2015

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

16. maj 2019

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

15. maj 2019

Sidst verificeret

1. maj 2019

Mere information

Begreber relateret til denne undersøgelse

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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