Eli Lil­ly-backed biotech grabs $100M to dis­patch an­ti­body-oligonu­cleotide con­ju­gates af­ter mus­cu­lar dy­s­tro­phy

Hold up your hand. Make a fist. Now open it. And again.

If you can do it ful­ly and with ease, then the pro­teins in your hand are like­ly work­ing prop­er­ly. If you can’t then they may not be. In peo­ple with my­oton­ic mus­cu­lar dy­s­tro­phy, some­thing more atom­ic is go­ing on.

In those folks, the prob­lem is RNA. Cer­tain base pairs re­peat far be­yond nor­mal, up to 11,000 su­per­flu­ous let­ters in some cas­es. The ex­tend­ed strands form “clumps.” Pro­teins mis­form and can’t func­tion prop­er­ly. They of­ten al­low one move­ment but not the re­verse, a con­di­tion called my­oto­nia that gives the dy­s­tro­phy its name.

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