In 2018 Toxicology Research published the article “Shikonin-mediated up-regulation of miR-34a and miR-202 inhibits retinoblastoma proliferation” by Yan Su, Shiyou Lu, Jincun Li and Liya Deng: 10.1039/c8tx00079d.
The editors have since received credible information about problems with data and figures in this article. The journal has contacted the authors to address these concerns.
Toxicology Research is publishing this Expression of Concern to alert readers that, pending the outcome of a full investigation, any claimed discoveries presented in the article named above may not be reliable.