Reliability of a new symptom score in a titrated quantitative conjunctival provocation test supported by an objective photodocumentation
Background: Allergen provocation tests are useful methods for proving the clinical relevance of an allergen-specific sensitization. Among these methods, the conjunctival provocation test (CPT) represents an easy-to-use tool. However, its readout parameters have not yet been internationally standardi...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
2018
|
| In: |
International archives of allergy and immunology
Year: 2018, Volume: 176, Issue: 3-4, Pages: 215-224 |
| ISSN: | 1423-0097 |
| DOI: | 10.1159/000487884 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1159/000487884 Verlag, lizenzpflichtig, Volltext: https://www.karger.com/Article/FullText/487884 
|
| Author Notes: | Oliver Pfaar, Dan Philipp Claßen, Anatoli Astvatsatourov, Ludger Klimek, Ralph Mösges |
| Summary: | Background: Allergen provocation tests are useful methods for proving the clinical relevance of an allergen-specific sensitization. Among these methods, the conjunctival provocation test (CPT) represents an easy-to-use tool. However, its readout parameters have not yet been internationally standardized or validated. Photodocumentation has been shown as a good option for objectifying a CPT reaction, supporting the local investigator assessment. Based on test-retest reliability of the score and an objective digital photoanalysis of the conjunctival redness, this study aimed to prove the reproducibility of a new CPT scoring system for use in clinical trials (ClinicalTrials.gov identifier: NCT02690740). Methods: A titrated quantitative CPT was conducted outside of the pollen season in a final cohort of 23 adult patients with birch or grass pollen-induced allergic rhinoconjunctivitis. Conjunctival symptoms were analyzed using a standardized symptom score. Conjunctival redness was also evaluated by an external observer and correlated with a digital photoanalysis using MATLAB software. Results: A test-retest correlation of 0.6 (p < 0.01) was found for the symptom score results. Likewise, a correlation of 0.65 (p < 0.01) was observed in the digital photoanalysis. The total symptom score showed a decrease in the mean value of 0.48 score points in the retest. Conclusions: This study reveals both a valuable test-retest correlation of the proposed score as well as a good correlation of eye redness with the (objective) photodocumentation. Based on our results, we can recommend the use of this scoring system as a valuable clinical protocol for future clinical trials. |
|---|---|
| Item Description: | Gesehen am 20.04.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1423-0097 |
| DOI: | 10.1159/000487884 |