- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg 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
Studieoversigt
Status
Detaljeret 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.
Undersøgelsestype
Tilmelding (Forventet)
Kontakter og lokationer
Studiekontakt
- Navn: Professor Pakit Vichyanond, MD
- Telefonnummer: 02-419-9465-6
- E-mail: pakitv@gmail.com
Undersøgelse Kontakt Backup
- Navn: Parawee Prottasan, MD
- Telefonnummer: 02-419-5670, 5889
- E-mail: Parawee_p@hotmail.com
Studiesteder
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-
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Bangkok, Thailand, 10700
- Rekruttering
- Siriraj Hospital
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Kontakt:
- Professor Pakit Vichyanond, MD
- Telefonnummer: 9465-6 662-419-7000
- E-mail: pakitv@gmail.com
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Kontakt:
- Parawee Prottasan, MD
- Telefonnummer: 5670, 5889 662-419-7000
- E-mail: Parawee_p@hotmail.com
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Ledende efterforsker:
- Professor Pakit Vichyanond, MD
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Underforsker:
- Professor Chaweewan Bunnag, MD
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Underforsker:
- Assistant Professor Pongsakorn Tantilipikorn, MD
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Underforsker:
- Professor Nualanong Visitsunthorn, MD
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Underforsker:
- Associate Professor Orathai Piboonpocanun, MD
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Underforsker:
- Punchama Pacharn, MD
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Underforsker:
- Parawee Prottasan, MD
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Underforsker:
- Triphoom Suwanwech, MD
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Underforsker:
- Chaweewan Sripramong, SC
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Underforsker:
- Unchalee Wangthan, SC
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Prøveudtagningsmetode
Studiebefolkning
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 undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
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healthy subjects no symptoms
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allergic rhinitis patient
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
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.
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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
|
Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Professor Pakit Vichyanond, MD, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Forventet)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 112/2553(EC3)
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