We test our approach on asthma, a chronic inflammatory disease of the lung and Parkinson’s disease (PD), a progressive disorder of the nervous system;18 and Huntington’s disease (HD), a neurodegenerative disorder caused by mutations in a single gene (Huntingtin).19 In all three diseases, we document a high heterogeneity between the PEEPs of individual patients. Here, HTT is linked to Parkinson disease.