Joura et al. — A 9-Valent HPV Vaccine against Infection and Intraepithelial Neoplasia in Women

New England Journal of Medicine, 2015 · 10.1056/NEJMoa1405044

OVERSTATED · 1 flag

In plain language

Joura et al. (NEJM 2015) tested the 9-valent HPV vaccine Gardasil 9, the product on the current UK schedule, against a comparator in roughly 14,000 women. The comparator was not an inert placebo but the earlier Gardasil 4 vaccine, whose own pivotal 'placebo' was the AAHS aluminium adjuvant, so there is no inert-placebo baseline anywhere in the Gardasil lineage. Gardasil 9 was actually MORE reactogenic than its Gardasil 4 comparator (injection-site adverse events about 90.7 versus 84.9 percent; serious adverse events relative risk about 1.27), yet the product is framed as well tolerated. The efficacy findings are not the issue; the tolerability claim rests on an active comparator that shares the adjuvant burden. Full text was paywalled to the audit engine, so the reactogenicity figures come from the ClinicalTrials.gov posted results and the FDA label rather than the subscription appendix.

Flags — what does not hold up

moderate overstatement — Comparator was Gardasil 4 (itself AAHS-adjuvant-controlled), and Gardasil 9 was MORE reactogenic (injection-site 90.7% vs 84.9%; serious-AE RR ~1.27) yet framed as well tolerated; no inert-placebo baseline exists in the lineage. ClinicalTrials.gov NCT00543543 posted results; FDA Gardasil 9 label
integrity moderate · impact high

Method — the checks that were run

comparator classification — Active comparator = Gardasil 4 (AAHS-adjuvant lineage); no inert placebo.
reactogenicity from open sources — Injection-site ~90.7% vs 84.9%; serious-AE RR ~1.27, from CT.gov posted results + FDA label (NEJM full text paywalled).

Next leads — where to look next

10.1056/NEJMoa061741 Gardasil 4 FUTURE II is the AAHS-'placebo' trial this product's safety baseline chains back to.
Gardasil 4 FUTURE II is the AAHS-'placebo' trial this product's safety baseline chains back to.

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