04.08.24 Author corrections We identified a small clerical error in our 2016 paper entitled "Quantifying mammalian genomic DNA hydroxymethylcytosine content using solid-state nanopores" in which a variable was misplaced in an expression. Results were unaffected, and the correction was just published. Unfortunately, our 2021 paper "Solid-state nanopore analysis of human genomic DNA shows unaltered global 5-hydroxymethylcytosine content associated with early-stage breast cancer" used the expression with the error and this time results were affected, although the conclusions were not. That correction has also just been published. We regret any difficulties this has caused!