PMID- 25685162 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150216 LR - 20200930 IS - 1710-1484 (Print) IS - 1710-1492 (Electronic) IS - 1710-1484 (Linking) VI - 10 IP - 1 DP - 2014 TI - The efficacy and safety of the Timothy grass allergy sublingual immunotherapy tablet in Canadian adults and children. PG - 53 LID - 10.1186/1710-1492-10-53 [doi] LID - 53 AB - BACKGROUND: The effect of sublingual Timothy grass immunotherapy tablet 2800 BAU (grass SLIT-T) has been evaluated in three North American trials in adults and children who have allergic rhinitis with or without conjunctivitis (AR/C). This paper examines the effects of grass SLIT-T in Canadians. METHODS: Data for grass-allergic Canadians in three randomized, placebo-controlled, double-blind trials were analyzed post hoc: 1) adults >/=18 y, grass-pollen season [GPS] 2009; 2) children 5- <18 y, 2009; and 3) adults 18-65 y and children 5- <18 y, GPS 2012. Data from the GPS 2009 trials were pooled to provide a more precise estimate of treatment effects than the individual studies would provide. In every trial, participants received once-daily grass SLIT-T or placebo approximately 12 weeks before and continuing throughout the GPS. Participants used daily electronic diaries to record AR/C symptoms and medication use for treatment of symptoms. The therapeutic effect of grass SLIT-T was measured as a total combined score (TCS = daily symptom score + daily medication score) averaged over the entire GPS. Safety was assessed by monitoring adverse events (AEs). RESULTS: In the three trials, 386 Canadian participants were randomized; the overall population had 2284 participants. Canadian participants treated with grass SLIT-T in the pooled adult-pediatric 2009 trials showed a 38% mean TCS reduction relative to placebo (-2.06 difference [95% CI: -3.72, -0.39]; 3.32 vs. 5.37). Participants treated with grass SLIT-T in the adult-pediatric 2012 trial showed a 37% median TCS reduction relative to placebo (-1.53 difference [95% CI: -2.1, -0.3]; 2.58 vs. 4.11). Similar efficacy findings were observed over the peak GPS. Approximately 90% of treatment-related AEs were mild or moderate in severity. Two Canadian participants had moderate systemic allergic reactions (skin, respiratory, abdominal symptoms) to grass SLIT-T; symptoms resolved within 1 hour without medical intervention or treatment. No serious or life-threatening treatment-related AEs occurred. CONCLUSION: The 2800 BAU Timothy grass SLIT-T significantly improved AR/C induced by Timothy grass pollen in adults and children >/=5 y in Canadians, which was consistent with the robust efficacy observed in the overall trial population. The treatment was generally well tolerated. TRIAL REGISTRATION: Clinicaltrials.gov identifiers NCT00562159, NCT00550550, NCT01385371. FAU - Hebert, Jacques AU - Hebert J AD - Centre de Recherche Appliquee en Allergie de Quebec, Quebec, Canada. FAU - Blaiss, Michael AU - Blaiss M AD - University of Tennessee Health Science Center, Memphis, TN USA. FAU - Waserman, Susan AU - Waserman S AD - McMaster University, Hamilton, ON Canada. FAU - Kim, Harold AU - Kim H AD - McMaster University, Hamilton, ON Canada ; Western University, London, ON Canada. FAU - Creticos, Peter AU - Creticos P AD - Johns Hopkins University School of Medicine, Baltimore, MD USA ; Creticos Research Group, Crownsville, MD USA. FAU - Maloney, Jennifer AU - Maloney J AD - Merck & Co., Inc, Whitehouse Station, NJ USA. FAU - Kaur, Amarjot AU - Kaur A AD - Merck & Co., Inc, Whitehouse Station, NJ USA. FAU - Li, Ziliang AU - Li Z AD - Merck & Co., Inc, Whitehouse Station, NJ USA. FAU - Nelson, Harold AU - Nelson H AD - National Jewish Health, Denver, CO USA. FAU - Nolte, Hendrik AU - Nolte H AD - Merck & Co., Inc, Whitehouse Station, NJ USA. LA - eng SI - ClinicalTrials.gov/NCT00562159 SI - ClinicalTrials.gov/NCT00550550 SI - ClinicalTrials.gov/NCT01385371 PT - Journal Article DEP - 20141030 PL - England TA - Allergy Asthma Clin Immunol JT - Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology JID - 101244313 PMC - PMC4326370 OTO - NOTNLM OT - Allergic rhinitis OT - Conjunctivitis OT - Sublingual immunotherapy tablet OT - Timothy grass pollen EDAT- 2015/02/17 06:00 MHDA- 2015/02/17 06:01 PMCR- 2014/10/30 CRDT- 2015/02/17 06:00 PHST- 2014/07/21 00:00 [received] PHST- 2014/10/15 00:00 [accepted] PHST- 2015/02/17 06:00 [entrez] PHST- 2015/02/17 06:00 [pubmed] PHST- 2015/02/17 06:01 [medline] PHST- 2014/10/30 00:00 [pmc-release] AID - 591 [pii] AID - 10.1186/1710-1492-10-53 [doi] PST - epublish SO - Allergy Asthma Clin Immunol. 2014 Oct 30;10(1):53. doi: 10.1186/1710-1492-10-53. eCollection 2014.