The original in Russian was published by «Troitsky Variant – Science» (TrV-Science) on November 16, 2020 )

In October, in a letter to the Lancet, we requested a retraction of the article by D. Yu. Logunov et al. [1] that reported a study on a COVID‑19 vaccine developed by the Gamaleya Research Institute. The reason for our letter was that the authors had not responded to our request for sharing individual patient data of their study, as was promised in their data sharing statement in the article. Of course, they could have refused to provide the data, but we have not had the privilege of receiving any answer. We consider this a gross violation of publication ethics that, according to the Lancet’s editorial policies adhering to COPE guidelines [1], warrants a retraction of the article.  Our letter has not been published, while events related to vaccine development are unfolding rapidly. Vaccination of the population in our country has been started outside of clinical trials based on the results of [2], which requires explaining our concern. Below we provide an analysis of the study’s flaws based on the published report and its supplementary appendix.