Loqus23 Therapeutics Ltd. has raised £35 million (US$46.6 million) in a series A to take forward small molecules it has discovered for the treatment of Huntington’s disease and other conditions that are driven by DNA mismatch repair (MMR). MMR fixes DNA insertions, deletions and misincorporation errors that occur during transcription and/or cellular replication. Smaller repairs are directed by MutSalpha, a protein that binds single base mismatches, while MutSbeta handles larger insertion/deletion loops. Huntington’s and other triplet repeat diseases are caused when trinucleotide repeats accumulate in somatic DNA to the extent that they interfere with protein expression.