Functional Dyspepsia (FD) - Clinical Response to Montelukast in Children
keskiviikko 15. toukokuuta 2019 päivittänyt: 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:
- systemic drug exposure (drug absorption, biotransformation and/or elimination)
- regulation of leukotriene biosynthesis
- cysteinyl leukotriene receptors and downstream mediators
- 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.
Tutkimuksen yleiskatsaus
Tila
Valmis
Ehdot
Opintotyyppi
Havainnollistava
Ilmoittautuminen (Todellinen)
18
Yhteystiedot ja paikat
Tässä osiossa on tutkimuksen suorittajien yhteystiedot ja tiedot siitä, missä tämä tutkimus suoritetaan.
Opiskelupaikat
-
-
Missouri
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Kansas City, Missouri, Yhdysvallat, 64108
- Children's Mercy
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-
Osallistumiskriteerit
Tutkijat etsivät ihmisiä, jotka sopivat tiettyyn kuvaukseen, jota kutsutaan kelpoisuuskriteereiksi. Joitakin esimerkkejä näistä kriteereistä ovat henkilön yleinen terveydentila tai aiemmat hoidot.
Kelpoisuusvaatimukset
Opintokelpoiset iät
8 vuotta - 17 vuotta (Lapsi)
Hyväksyy terveitä vapaaehtoisia
Ei
Sukupuolet, jotka voivat opiskella
Kaikki
Näytteenottomenetelmä
Ei-todennäköisyysnäyte
Tutkimusväestö
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.
Kuvaus
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
Opintosuunnitelma
Tässä osiossa on tietoja tutkimussuunnitelmasta, mukaan lukien kuinka tutkimus on suunniteltu ja mitä tutkimuksella mitataan.
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
Kohortit ja interventiot
Ryhmä/Kohortti |
|---|
|
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. |
Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Identification of a signature of montelukast response using gene expression patterns in biopsy samples from clinical responders and non-responders to montelukast.
Aikaikkuna: Approximately 7-8 weeks
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Identification of patients who will benefit from montelukast therapy , allowing more efficient, and possibly more effective, care.
|
Approximately 7-8 weeks
|
Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
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.
Aikaikkuna: 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.
|
Yhteistyökumppanit ja tutkijat
Täältä löydät tähän tutkimukseen osallistuvat ihmiset ja organisaatiot.
Tutkijat
- Päätutkija: Craig A. Friesen, MD, Children's Mercy, Division of Gastroenterlogy, Hepatology, and Nutrition
- Päätutkija: Steven Leeder, PharmD, PhD, Children's Mercy, Division of Clinical Pharmacology and Medical Toxicology
Julkaisuja ja hyödyllisiä linkkejä
Tutkimusta koskevien tietojen syöttämisestä vastaava henkilö toimittaa nämä julkaisut vapaaehtoisesti. Nämä voivat koskea mitä tahansa tutkimukseen liittyvää.
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