Enhancer-Module Regulatory Configurations Underlying Autism Phenotypic Heterogeneity

Multisystem Cognitive Regulatory Subtype (MCRS) v2: Enhancer-Module Regulatory Configurations Underlying Autism Phenotypic Heterogeneity extends the original MCRS framework into the domain of autism-associated cognitive diversity. Whereas MCRS v1 established a general theory of individualized cognitive architecture arising from rare enhancer-variant networks, this work develops a domain-specific theoretical extension focused on explaining autism heterogeneity through regulatory architecture rather than categorical diagnosis. This manuscript proposes a non-clinical, systems neurogenomics model in which autism-associated phenotypes are conceptualized as stable configurations within a multidimensional enhancer-regulated module state space. Cognitive diversity is modeled at the level of regulatory coordination encompassing excitation–inhibition balance, synaptic organization, plasticity thresholds, language sequencing, social salience gating, and developmental timing rather than at the level of genes, symptoms, or severity scales. Under this framework, rare non-coding regulatory variants act through enhancer convergence to shape coordinated gene-network modules. Distinct phenotypic profiles arise from relative module weighting, selective coupling, and developmental timing, producing stable yet heterogeneous cognitive architectures without invoking deficit-based interpretations or discrete causal categories. Autism-associated traits are thus reframed as regions within regulatory state space rather than as singular conditions or linear impairments. The work introduces conceptual representations of regulatory self-maps, enhancer-module topology, and developmental convergence trajectories, separating regulatory structure from regulatory dynamics. It generates falsifiable predictions concerning enhancer convergence, developmental timing, and phenotype similarity while remaining agnostic to clinical taxonomy and explicitly avoiding diagnostic or therapeutic claims. MCRS Autism (v2) does not modify or supersede the foundational MCRS framework. Instead, it operates as a theoretical extension, preserving versioned continuity while demonstrating how enhancer-mediated regulatory architecture can account for autism-associated phenotypic diversity in a mechanistic, testable, and non-reductionist manner. The framework is intended to inform future empirical work in regulatory genomics, systems neuroscience, and cognitive modeling.