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Moral L, Toral T, Muñoz C, Marco N, García-Avilés B, Murcia L, Forniés MJ, González MC, Canals F, Bragado E, Martínez Olmos J, García-Magán C, Moure González JD, Cortés N, Giménez M, Gómez C, Rodríguez AB, Moreno A, Lucas JM, Quevedo S, Blasco C, Aliaga Y. Direct oral challenge for immediate and non-immediate beta-lactam allergy in children: A real-world multicenter study. Pediatr Allergy Immunol 2024; 35:e14096. [PMID: 38425150 DOI: 10.1111/pai.14096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/03/2024] [Accepted: 02/09/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND Allergy to beta-lactam antibiotics (BLA) is frequently suspected in children, but a drug provocation test (DPT) rules it out in over 90% of cases. Direct oral DPT (DODPT), without skin or other previous tests, is increasingly been used to delabel non-immediate BLA reactions. This real-world study aimed to assess the safety and effectiveness of DODPT in children with immediate and non-immediate reactions to BLAs. METHODS Ambispective registry study in children (<15 years), attended between 2016 and 2023 for suspected BLA allergy in 15 hospitals in Spain that routinely perform DODPT. RESULTS The study included 2133 patients with generally mild reactions (anaphylaxis 0.7%). Drug provocation test with the implicated BLA was performed in 2014 patients (94.4%): 1854 underwent DODPT (86.9%, including 172 patients with immediate reactions). One hundred forty-five (7.2%) had symptoms associated with DPT, although only four reactions were severe: two episodes of anaphylaxis and two of drug-induced enterocolitis syndrome, which resolved rapidly with treatment. Of the 141 patients with mild reactions in the first DPT, a second DPT was considered in 87 and performed in 57, with 52 tolerating it without symptoms. Finally, BLA allergy was ruled out in 90.9% of the sample, confirmed in 3.4%, and remained unverified, usually due to loss to follow-up, in 5.8%. CONCLUSIONS Direct oral DPT is a safe, effective procedure even in immediate mild reactions to BLA. Many reactions observed in DPT are doubtful and require confirmation. Severe reactions are exceptional and amenable to treatment. Direct oral DPT can be considered for BLA allergy delabeling in pediatric primary care.
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Affiliation(s)
- Luis Moral
- Hospital General Universitario Dr. Balmis, ISABIAL, Alicante, Spain
| | - Teresa Toral
- Hospital General Universitario Dr. Balmis, ISABIAL, Alicante, Spain
| | | | - Nuria Marco
- Hospital Vega Baja de Orihuela, San Bartolome, Spain
| | | | | | | | | | | | - Esther Bragado
- Hospital General Universitario Santa Lucía, Cartagena, Spain
| | | | | | | | - Nuria Cortés
- Hospital Universitario Mútua de Terrassa, Terrassa, Spain
| | - Magalí Giménez
- Hospital Sant Joan de Deu, Althaia Xarxa Assistencial Universitària de Manresa, Manresa, Spain
| | - Catalina Gómez
- Hospital Sant Joan de Deu, Althaia Xarxa Assistencial Universitària de Manresa, Manresa, Spain
| | | | - Ana Moreno
- Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
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Moral L, Mori F. Drug provocation tests in children: All that glitters is not gold. Pediatr Allergy Immunol 2023; 34:e14002. [PMID: 37622259 DOI: 10.1111/pai.14002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/21/2023] [Accepted: 07/11/2023] [Indexed: 08/26/2023]
Abstract
A proper allergy work-up, based on the gold standard drug provocation test (DPT), usually rules out suspected drug hypersensitivity in children. These tests are generally open, given their high efficiency compared with double-blind placebo-controlled DPTs. Although their negative predictive value is excellent, no studies have calculated their positive predictive value, highly dependent on the prevalence of the disease. Most studies have found a rate of <5%-10% of true beta-lactam hypersensitivity in children. Given this low prevalence (pre-test probability), a few false-positive results can significantly reduce the estimated positive predictive value. False positives may arise from the nocebo effect during the test, including nocebo by proxy, or from observer bias, which depends on professional expertise and organizational circumstances. Some studies have found a high rate of tolerance on a second DPT in children who failed the first, but these results may be affected by the interval between the two tests, of a year or more in most cases, reflecting a loss of hypersensitivity over time. Taking into account the low rate of positive DPTs, with commonly mild reactions, we suggest confirming nonsevere positive DPTs with a second provocation performed soon after the first, especially in the case of beta-lactam antibiotics, in order to improve the diagnostic accuracy, de-label more patients, and achieve a better estimation of true drug hypersensitivity prevalence. In case of mild immediate reactions, the potential benefits of a second DPT should be carefully weighed against the risk of anaphylaxis.
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Affiliation(s)
- Luis Moral
- Pediatric Allergy and Respiratory Unit, Dr. Balmis General University Hospital, Alicante Institute for Health and Biomedical Research (ISABIAL), Alicante, Spain
| | - Francesca Mori
- Allergy Unit, Meyer Children's Hospital, IRCCS Florence, Florence, Italy
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Srisuwatchari W, Phinyo P, Chiriac AM, Saokaew S, Kulalert P. The Safety of the Direct Drug Provocation Test in Beta-Lactam Hypersensitivity in Children: A Systematic Review and Meta-Analysis. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2023; 11:506-518. [PMID: 36528293 DOI: 10.1016/j.jaip.2022.11.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/10/2022] [Accepted: 11/20/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Direct drug provocation test (DPT) without prior skin testing (ST) has been investigated in children suspected of being at risk for beta-lactam (BL) hypersensitivity reaction (HSR). However, no systematic review and meta-analysis has investigated the efficacy and safety of direct DPT for BL-HSR in children. OBJECTIVE To investigate the prevalence of BL-HSR by direct DPT and the safety of direct DPT in children. METHODS We searched MEDLINE, EMBASE, Web of Science, and CINAHL from their inception to July 23, 2022, for studies that performed direct DPT in children with suspected BL-HSR, or for studies that performed DPT in all cases with ST results, but they ignored the ST results. The true prevalence was defined as the proportion of children who experienced an HSR during direct DPT. Safety was determined according to the proportion of children who developed a dangerous reaction following DPT. RESULTS Twenty-eight studies with 8,334 direct challenges were included. Fifteen studies included patients who presented with either immediate or nonimmediate HSR, and the majority of the index reactions were nonsevere. Amoxicillin/amoxicillin-clavulanic acid was the most commonly used during the DPT. The pooled prevalence of confirmed BL-HSR was 5.23% (95% CI 4.17-6.39; I2 = 72%). Immediate and nonimmediate HSR were reported in 0.8% (95% CI 0.43-1.25; I2 = 55.1%) and 3.69% (95% CI 2.66-4.87; I2 = 79.77%), respectively. Severe reactions were found in 3 cases with the frequency of 0.036% (95% CI 0.012-0.112; I2 = 0%). CONCLUSIONS The prevalence of BL-HSR by direct DPT was 5.23%, and the frequency of severe reactions from direct DPT was very low (0.036%). Our findings support direct DPT as a safe and effective delabeling tool in children with suspected nonsevere BL-HSR.
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Affiliation(s)
- Witchaya Srisuwatchari
- Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Phichayut Phinyo
- Center for Clinical Epidemiology and Clinical Statistics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Department of Family Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand; Musculoskeletal Science and Translational Research (MSTR), Chiang Mai University, Chiang Mai, Thailand
| | - Anca Mirela Chiriac
- Division of Allergy, Department of Pulmonology, Hôpital Arnaud de Villeneuve, University Hospital of Montpellier, Montpellier, France; IDESP, UMR UA11, University of Montpellier, INSERM, Montpellier, France
| | - Surasak Saokaew
- UNIt of Excellence on Clinical Outcomes Research and IntegratioN (UNICORN), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
| | - Prapasri Kulalert
- Department of Clinical Epidemiology, Faculty of Medicine, Thammasat University, Pathum Thani, Thailand; Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathum Thani, Thailand.
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Paassilta M. How to tackle over-labelling of antibiotic allergy in children: A clear and safe procedure. Acta Paediatr 2022; 111:914-915. [PMID: 35130359 DOI: 10.1111/apa.16270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 01/21/2022] [Indexed: 12/22/2022]
Affiliation(s)
- Marita Paassilta
- Tampere university Tampere Finland
- Tampere university hospital allergy centre Tampere Finland
- Pihlajalinna Dextra Helsinki Finland
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