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A tentative excess in the electron spectrum at 1.4 TeV was recently reportedby the DArk Matter Particle Explorer (DAMPE). A non-astrophysical scenario inwhich dark matter particles annihilate or decay in a local clump has beeninvoked to explain the excess. If $e^\pm$ annihilation channels in the finalstates are mediated by left-handed leptons as a component in the $SU(2)_L$doublet, neutrinos with similar energies should have been simultaneouslyproduced. We demonstrate that generic dark matter models can be decisivelytested by the existing IceCube data. In case of a non-detection, such modelswould be excluded at the $5\sigma$ level by the five-year data for a point-likesource and by the ten-year data for an extended source of dark matter particleswith left-handed leptons.

A Strong Test of the Dark Matter Origin of the 1.4 TeV DAMPE Signal Using IceCube Neutrinos