- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT01172613
Optimal Concentration of Dermatophagoides Pteronyssinus (Dp) Allergen Extract for Skin Prick Test (SPT) of Thai Population (DSPT)
Optimal Concentration of Allergen Extract of Dermatophagoides Pteronyssinus to be Used in Diagnostic Allergy Skin Prick Test Among Thai Population
Studieoversikt
Status
Detaljert beskrivelse
The current allergy diagnostic reagent of house dust mites marketed in the USA is at 10,000 AU/ml. This is based on the IDEAL50 concept put forth by Turkeltaub et al, almost 3 decades ago. Such concentration has been shown to give large degree of false positives even in the US population.
In Thailand, it was anecdotally observed that at such concentration, sizes of positive tests among atopic subjects were quite large and could lead to discomfort and a possible anaphylaxis in certain allergic individuals. Moreover, up to 40% of normal individuals could give positive reaction to this concentration.
It is therefore desirable to reexamine the appropriate concentration of diagnostic reagent of house dust mites among the Thai population and will be the main objective of this research.
Studietype
Registrering (Forventet)
Kontakter og plasseringer
Studiekontakt
- Navn: Professor Pakit Vichyanond, MD
- Telefonnummer: 02-419-9465-6
- E-post: pakitv@gmail.com
Studer Kontakt Backup
- Navn: Parawee Prottasan, MD
- Telefonnummer: 02-419-5670, 5889
- E-post: Parawee_p@hotmail.com
Studiesteder
-
-
-
Bangkok, Thailand, 10700
- Rekruttering
- Siriraj Hospital
-
Ta kontakt med:
- Professor Pakit Vichyanond, MD
- Telefonnummer: 9465-6 662-419-7000
- E-post: pakitv@gmail.com
-
Ta kontakt med:
- Parawee Prottasan, MD
- Telefonnummer: 5670, 5889 662-419-7000
- E-post: Parawee_p@hotmail.com
-
Hovedetterforsker:
- Professor Pakit Vichyanond, MD
-
Underetterforsker:
- Professor Chaweewan Bunnag, MD
-
Underetterforsker:
- Assistant Professor Pongsakorn Tantilipikorn, MD
-
Underetterforsker:
- Professor Nualanong Visitsunthorn, MD
-
Underetterforsker:
- Associate Professor Orathai Piboonpocanun, MD
-
Underetterforsker:
- Punchama Pacharn, MD
-
Underetterforsker:
- Parawee Prottasan, MD
-
Underetterforsker:
- Triphoom Suwanwech, MD
-
Underetterforsker:
- Chaweewan Sripramong, SC
-
Underetterforsker:
- Unchalee Wangthan, SC
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Prøvetakingsmetode
Studiepopulasjon
Beskrivelse
Inclusion Criteria:allergic rhinitis
- clinical diagnosis of allergic rhinitis
- has skin prick test positive to standard Dp extract (wheal diameter 3 mm. or greater)
- not take any medications that interfere the tests (skin prick test and nasal allergen provocation test)
Inclusion Criteria:healthy subject
- no underlying disease
- not take any medications that interfere the tests (skin prick test and nasal allergen provocation test)
Exclusion Criteria:
- has skin prick test positive to standard Dp extract with wheal diameter more than 10 mm.
- has chronic disease eg. HIV infection, neurological diseases, hypertension, cardiac diseases, pulmonary diseases, hepatobiliary diseases, renal diseases, endocrinological diseases, congenital malformation, malignancy
- if has asthma, uncontrolled asthma symptom or PEF < 70%
- during pregnancy or lactation
- has chronic skin disease
- participate other project within 30 days
- has abnormal anatomy of the nose
Studieplan
Hvordan er studiet utformet?
Designdetaljer
Kohorter og intervensjoner
Gruppe / Kohort |
---|
healthy subjects no symptoms
|
allergic rhinitis patient
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
---|---|---|
appropriate concentration of diagnostic reagent of house dust mite (Dp)
Tidsramme: 15 minutes
|
to determine appropriate dilutional concentration of diagnostic reagent of house dust mite (Dp) that has high sensitivity and positive predictive value and wheal size not more than 10 mm. to be used in diagnosis allergic rhinitis in Thai population by skin prick test.
|
15 minutes
|
Sekundære resultatmål
Resultatmål |
Tidsramme |
---|---|
false positive rates of various dilutions of diagnostic reagent (house dust mite: Dp) that be used in skin prick test in Thai healthy population
Tidsramme: 15 minutes
|
15 minutes
|
false negative rates of various dilutions of diagnostic reagent (house dust mite: Dp) that be used for diagnosis allergic rhinitis in Thai population by skin prick test
Tidsramme: 15 minutes
|
15 minutes
|
Samarbeidspartnere og etterforskere
Sponsor
Etterforskere
- Hovedetterforsker: Professor Pakit Vichyanond, MD, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University
Studierekorddatoer
Studer hoveddatoer
Studiestart
Primær fullføring (Forventet)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- 112/2553(EC3)
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .
Kliniske studier på Rhinitt, Allergisk, Flerårig
-
University Hospital, GhentRekruttering
-
Brian J LipworthTilbaketrukketAllergisk rhinitt | Takyfylakse | Rhinitis MedicamentosaStorbritannia
-
Brian J LipworthFullførtAllergisk rhinitt | Takyfylakse | Rhinitis MedicamentosaStorbritannia