MenQuadfi (MenACWY-TT): A New Vaccine for Meningococcal Serogroups ACWY

Annals of Pharmacotherapy, Volume 56, Issue 6, Page 727-735, June 2022.
ObjectiveThis article reviews data encompassing the pharmacology, efficacy, and safety of MenACWY-TT (MenQuadfi), a conjugate vaccine to prevent meningococcal disease from serogroups A, C, W, Y.Data SourcesA literature review was conducted in PubMed, MEDLINE, and ClinicalTrials.gov from inception up to July 2021, using the search terms MenQuadfi, meningococcal ACWY vaccine, MCV4, and menacwy. Articles from reference lists were included to identify potential relevant literature.Study Selection and Data ExtractionData were limited to randomized phase II and III clinical studies published in the English language, evaluating the efficacy and safety of MenACWY-TT. Animal studies and studies not utilizing MenACWY-TT were excluded.Data SynthesisOne phase II and 4 phase III randomized clinical studies, enrolling approximately 7700 participants, aged 2 years to 97 years old found that MenACWY-TT was noninferior when compared to established MenACWY vaccines, as measured by surrogate immunogenicity end points. In studies evaluating primary dose vaccination, conducted in those aged 2 to 97 years of age, the difference in seroresponse rates, reported by the lower bound of the 95% CI, was (A) 1.1% to 14.8%, (C) 21% to 42.2%, (Y) 7.7% to 24.6%, and (W) 8.9% to 22.5%.Relevance to Patient Care and Clinical PracticeDespite the low incidence of meningococcal disease in the United States, meningococcal disease causes significant morbidity and mortality if not prevented.ConclusionMenACWY-TT is noninferior to currently approved quadrivalent meningococcal vaccines and shows similar immunogenicity and safety as both an initial vaccine for prevention as well as a booster dose.