Kimberly Kitzerow’s Body of Work in Understanding Autism

Understanding Autism

Explore Kimberly Kitzerow’s body of work examining autism, autism support needs, co-occurring medical conditions, skill and behavior development, and the biological relationships that may help explain why autism and its comorbidities can cluster differently from person to person.

This guide brings together Kitzerow’s work across NeuroToggle®, BioToggle®, BioDials®, the Jigsaw Puzzle Methodology™, and Kitzerow’s Autism and the Comorbidities Cascade to provide a plain-language overview of autism from developmental, educational, and systems-biology perspectives.

Parent Starting Point

Parents of Nonverbal Children: Start Here

Begin with the nonverbal autism guide and resources.

1 · Understanding Autism

What Is Autism Versus a Comorbid Condition?

Autism traits and comorbid conditions can occur in the same person and influence one another, but they describe different parts of the person’s developmental and health profile.

What Autism Traits Involve

Autism is a neurodevelopmental condition identified through patterns involving social communication and interaction, restricted or repetitive behaviors or interests, and developmental differences that may affect areas such as language, learning, movement, sensory processing, attention, and daily functioning.

Review autism signs and symptoms from the CDC →

What Autism Comorbidities Involve

Comorbidities are additional medical, psychiatric, neurological, or developmental conditions that occur alongside another diagnosis. In autistic people, these may include epilepsy, gastrointestinal disorders, sleep disorders, anxiety, ADHD, dysautonomia, pain, connective-tissue conditions, or other diagnosed conditions.

Read Cleveland Clinic’s definition of comorbidities →

Why both definitions matter: autism-related developmental traits and co-occurring health conditions can affect one another, but a medical condition is not automatically an autism trait. Understanding the whole person requires considering both.

2 · Autism Support Levels

What Do Autism Levels 1, 2, and 3 Mean?

Autism Levels 1–3 provide a broad clinical description of the support needed for autism-related differences in social communication and restricted or repetitive behavior.

The Three Autism Support Levels

Autism support levels are not measures of intelligence, potential, worth, or a complete description of the person. Support needs can differ across functional domains, environments, circumstances, and stages of life.

Autism Level 1

Requiring Support

The person may manage many activities independently but still have meaningful difficulty with social communication, organization, transitions, flexibility, sensory demands, or functioning without accommodations.

Autism Level 2

Requiring Substantial Support

Social-communication differences are more apparent, and restricted or repetitive behavior, sensory differences, or difficulty with change interfere more substantially with daily functioning.

Autism Level 3

Requiring Very Substantial Support

The person may need extensive assistance with communication, flexibility, transitions, safety, self-care, regulation, and daily living.

3 · The Individual Autism Profile

Why Can Two Autistic People Have Very Different Support Needs?

An autistic person’s needs reflect more than an autism diagnosis or support level alone. Their individual profile includes the specific skills and behaviors developing differently, their strengths, and any co-occurring medical, psychiatric, neurological, or developmental conditions affecting daily function.

Autism Support Needs Come From the Whole Profile

Two autistic people can have the same diagnosis while having very different abilities, barriers, health conditions, and support needs. Pain, seizures, sleep disruption, gastrointestinal symptoms, autonomic dysfunction, anxiety, ADHD, or another co-occurring condition can affect communication, regulation, learning, movement, behavior, independence, and participation.

Part One · Autism-Related Skill and Behavior Profile

Possible autism-related skill and behavior presentations
Functional Area Possible Presentations
ReadingHyperlexia, typical reading development, dyslexia, or significant difficulty developing functional reading
CommunicationHyperverbal, conversational, minimally verbal, nonverbal, or reliant on AAC
Sensory ProcessingSensory seeking, sensory avoiding, high sensitivity, low registration, or a combination depending on the input
Learning and Daily FunctionExceptional abilities in some areas alongside difficulty accessing daily-living, executive-function, or adaptive skills
Behavior and RegulationImpulsivity, rigidity, shutdown, harmful behavior, repetitive behavior, or difficulty shifting between states
Interests and ChangeHighly focused interests, broad interests, novelty seeking, or significant difficulty with changes in routine
Social InteractionHighly social, selectively social, inconsistently engaged, socially withdrawn, or requiring substantial support to interact
Memory and RecallExceptional memory in some forms alongside difficulty retrieving, organizing, or applying information in others

Part Two · Autism Comorbidities and Medical Conditions

Areas that may contribute to an autistic person’s overall support profile
Area Possible Effects
ImmuneImmune-related conditions, recurrent illness, allergies, inflammatory symptoms, or changes during infection
Metabolic and GastrointestinalEnergy, feeding, digestion, gastrointestinal symptoms, nutrient handling, or fatigue-related concerns
Cellular Repair and StructureConnective-tissue concerns, joint instability, pain, healing, tissue integrity, or physical recovery
Nervous System and Autonomic FunctionSeizures, migraine, sleep disruption, pain regulation, heart-rate or blood-pressure symptoms, or dysautonomia
Psychiatric and NeurodevelopmentalADHD, anxiety, mood-related conditions, learning disorders, or other diagnoses that interact with learning, regulation, and behavior
4 · Autism and Comorbidities

Why May Autism and Comorbid Traits Cluster?

Kitzerow’s Autism and the Comorbidities Cascade asks whether developmental and medical outcomes that repeatedly occur together may arise from connected upstream biology.

Regulatory and temporal conditions influence biological activity
Gene expression and protein or isoform patterns change
Biochemical pathway activity changes or is redirected
Neural development and function
Predicted autism-related effects
Cells, tissues, and body systems
Predicted medical effects
Different combinations of downstream effects produce different individual trait profiles

This is the Cascade’s proposed explanation, not an established clinical mechanism. It does not predict that every autistic person has the same biological changes or the same comorbid conditions.

5 · One System, Individual Pathways

What Variables in the Cascade Influence Autism Support Level?

The Cascade proposes that developmental and physiological impact depends on which regulatory systems are affected, biological timing, duration, and strength of disruption.

Regulatory Systems
×
Biological Timing
×
Duration
×
Strength
Individual Impact
1

Which Regulatory Systems Are Activated?

Immune, metabolic, cellular-repair, nervous-system, and gene-regulatory domains may influence different pathways, tissues, neural circuits, and physiological functions.

2

When Does the Disruption Occur?

The same pathway change may have a different effect depending on ultradian, circadian, circannual, developmental, and aging-related timing.

3

How Long Does It Last?

A short regulatory response may have a different effect from one persistent enough to influence development or ongoing physiology.

4

How Strong Is the Effect?

The magnitude of regulatory activation and pathway disruption may influence the magnitude of functional impact.

The Predicted Result: Different Autism Profiles and Support Needs

Different combinations of these variables could produce different effects on neural circuits, skills, behaviors, body systems, and medical conditions.

Autism support levels are currently assigned clinically from observable characteristics and support needs, not from Cascade biomarkers.

6 · Common Questions

Common Questions About Autism, Biology, and the Cascade

These questions separate established observations from the interpretations and predictions made within Kitzerow’s Autism and the Comorbidities Cascade.

Is This Why People Report Different Results From “Detox,” Diet Changes, Glutathione, Redox-Targeting Supplements, or Other Interventions?

Potentially, but response to an intervention does not establish why the response occurred.

Kitzerow’s Cascade predicts that autistic people can have different combinations of dysregulated pathways, regulatory states, biochemical demands, comorbid conditions, and downstream physiological effects. An intervention that changes a biologically relevant pathway for one person could therefore produce a different result in another person whose biological profile is different.

Interventions intended to influence oxidative stress or redox biology may affect systems involving glutathione, reactive oxygen species, inflammatory signaling, cellular repair, or related biochemical processes. Diet changes can alter nutrient intake, gastrointestinal function, food exposure, metabolism, and other physiological variables.

Response Is Information, Not Proof of Mechanism

Improvement after an intervention does not demonstrate that the intervention treated autism itself, and it does not prove the Cascade.

The useful questions are what changed, whether the change was measurable, which pathway could plausibly have been affected, what alternative explanations exist, and whether the intervention is safe.

The term “detox” is broad and does not describe one scientifically defined biological mechanism. Chelation, restrictive diets, supplements, and other medically active interventions may carry risks and should be discussed with properly licensed medical professionals.

What About Vaccines?

Kitzerow’s model distinguishes autism itself from an acquired medical injury that may occur in an autistic person.

Vaccines, like other medical interventions, can rarely be associated with serious adverse events. The U.S. Vaccine Injury Table recognizes specified injuries under defined circumstances, including anaphylaxis and, for certain vaccines, encephalopathy or encephalitis within specified time periods.

Review the U.S. Vaccine Injury Table →

How Vaccine Injury Fits Into Kitzerow’s Model

Within the Cascade, a confirmed neurological, immune, inflammatory, or other acquired medical injury occurring in an autistic person would become part of that person’s comorbid medical profile.

A serious neurological injury such as encephalopathy can substantially affect communication, cognition, motor function, regulation, adaptive functioning, behavior, and overall support needs without making that acquired injury the cause of the person’s underlying autism.

The model also raises a susceptibility question: why can the same exposure be tolerated by most people while a smaller vulnerable subgroup experiences a serious adverse response?

Kitzerow’s Cascade predicts that inherited differences affecting immune regulation, metabolism, redox balance, nervous-system function, protein behavior, and related systems may influence individual vulnerability. The specific genetic architecture of a particular adverse reaction requires direct testing.

The model therefore does not treat vaccine injury as the cause of autism. It treats a documented injury as an additional acquired physiological burden that may substantially change the individual’s comorbid profile and overall support needs.

Why Are Reported Autism Rates Increasing?

Measured autism prevalence and biological incidence are not the same measurement.

Broader diagnostic criteria, greater recognition, earlier screening, improved identification of people with less obvious presentations, diagnostic substitution, changes in surveillance, and increased access to autism-specific services can all increase the number of people identified as autistic.

Changes in Identification

Factors include broader diagnostic criteria, improved professional awareness, earlier screening, recognition of autistic adults and people with lower apparent support needs, diagnostic reclassification, and changes in educational and medical reporting.

Kitzerow’s Interpretation

Kitzerow considers diagnostic expansion, historical deinstitutionalization, increased participation of autistic people in community life, reproduction across generations, and improved identification to be plausible contributors to the long-term increase in measured autism prevalence.

This is Kitzerow’s interpretation of the population trend, not an established single-cause explanation.

Could Immune-System Mate Selection Affect Population Genetics?

Immune diversity is advantageous to species survival because it reduces the likelihood that an entire population will be vulnerable to the same pathogens. Research has investigated whether attraction toward immunologically different partners, particularly involving MHC genes, may help preserve this diversity.

Kitzerow proposes that this survival mechanism could have different outcomes depending on the variants being combined. When two immune profiles contain complementary functional variation, offspring may gain broader immune resilience. When each parent instead carries different vulnerabilities affecting interacting regulatory systems, offspring could inherit both, potentially producing greater physiological dysfunction.

At the population level, this could still be evolutionarily advantageous. Genetic combinations supporting survival and reproduction would become more represented across generations, while combinations substantially reducing biological or reproductive fitness would tend to become less represented.

Kitzerow proposes that the same mechanism helping preserve immune diversity at the species level could therefore occasionally combine regulatory vulnerabilities with significant consequences for individual offspring. This extension to autism and its comorbidities remains a hypothesis requiring direct testing.

Review research on MHC-correlated mate choice in humans →

Review meta-analytic research on human MHC-dependent mate choice →

Read research on romantic attachment and immune-system gene regulation →

7 · Autism Support and Future Research

What Can We Do About Autism Support Needs Now?

The available options depend on what is being addressed. Autism-related traits can be supported through educational and therapeutic approaches. Comorbid medical conditions require targeted medical intervention from properly licensed medical professionals. The proposed mechanisms responsible for trait clustering remain research targets for eventual clinical translation if research continues to support them.

How Does Systems Biology Connect Molecules to the Whole Person?

Systems biology examines how biological effects move across levels of organization. A molecular or biochemical change can alter cellular behavior, which can affect tissues, organs, physiological systems, and ultimately the whole person.

Molecular and Biochemical Activity
Proteins, metabolites, signaling molecules, redox reactions, and biochemical pathways
Cellular Function
Changes in signaling, energy production, repair, transport, neurotransmission, immune activity, and gene regulation
Tissue Function
Changes in how groups of cells function together
Organ and System Function
Effects across the nervous, gastrointestinal, immune, cardiovascular, endocrine, and other systems
Whole-Person Physiology
The combined physiological impact experienced at the organism level

This is why the level being targeted matters. An intervention can support a downstream skill, behavior, symptom, or diagnosed condition without changing the upstream biology that contributed to it. A validated upstream intervention could theoretically influence several downstream outcomes at once.

The Impact Depends on Which Node Is Targeted

Different interventions act at different points between upstream biology and observable traits. The level being targeted determines the type and breadth of effect that may be possible.

Target the Trait or Outcome

Support a visible skill, behavior, communication need, functional barrier, symptom, or diagnosed condition after it has developed.

Target a Downstream Pathway

Address a biological process contributing to a particular medical outcome when the mechanism has been identified and an evidence-based intervention exists.

Target an Upstream Node

Potentially influence multiple downstream pathways and traits if the proposed shared mechanism is validated and shown to be safely actionable.

See the Five Levels That Can Be Targeted

The Cascade can be viewed across five intervention levels moving from upstream molecular drivers to downstream traits. The farther upstream the target, the greater the theoretical potential to influence multiple downstream effects, but the greater the research and validation required before clinical use.

1 Gene + Protein
Emerging Research Frontier

Target the Upstream Genetic or Protein Driver

Gene-, RNA-, and protein-directed approaches can target molecular drivers before their effects propagate through downstream systems and pathways. Application to specific Cascade nodes remains a research and translational question.

2 Regulatory Systems
Systems Research Target

Target Regulatory-System Dysfunction

Investigate whether dysregulation within immune, metabolic, cellular-repair, nervous-system, or epigenetic and genetic protein-synthesis systems can be measured, subgrouped, and safely modified.

3 Shunt
Proposed Upstream Target

Target What Is Redirecting Pathway Activity

The Cascade proposes that some pathway abnormalities may result from coordinated biochemical shunting rather than isolated pathway failure. Proposed nodes include the BH4, AAAH, NOS, AGMO, and related redox-sensitive shunts.

4 Pathway
Available or Developing

Target a Downstream Biological Pathway

Research and existing medicine can target identified pathways involving neurotransmission, immune signaling, inflammatory activity, oxidative stress, metabolism, mTOR, endocannabinoid signaling, E/I balance, and other mechanisms when an appropriate intervention exists.

5 Downstream Trait
Available Now

Target the Individual Trait or Diagnosed Condition

Existing educational, therapeutic, and medical approaches can directly address communication, skill development, behavior, sleep, seizures, gastrointestinal conditions, psychiatric conditions, autonomic dysfunction, metabolic problems, and other identified needs.

These are intervention levels, not five established autism treatments. They show where an intervention could act within the proposed Cascade. Clinical availability differs substantially by target, condition, mechanism, and evidence base.

Options for Autism Traits

Support Skill, Behavior and Functional Development

Autism-related communication, learning, sensory, motor, behavioral, adaptive, and functional needs can be supported through educational, communication, occupational, behavioral, and other developmental approaches selected for the individual skill or barrier.

Behavior

Behavior Supports

Support development of safer, more functional behaviors and alternative ways to communicate, regulate, respond, or access a needed outcome.

Skills

Occupational Therapy

Targets daily-living and functional skills, including sensory, motor, coordination, planning, regulation, and participation-related needs.

Communication

Speech Therapy and AAC

Supports speech, language, comprehension, motor planning, initiation, and access to functional communication through speech, AAC, or both.

Educational Application · NeuroToggle®

Match Teaching Strategy to Neural-Circuit Change

NeuroToggle® is Kitzerow’s educational system for skill and behavior development. It matches teaching strategies to the neural-circuit changes they influence to optimize outcomes for developing, strengthening, generalizing, timing, and replacing functional skills and behaviors.

The NeuroToggle® System

Understanding Skill and Behavior Development With NeuroToggle®

Every skill and behavior uses sensory, cognitive, and motor neural circuits working together. These circuits learn and change through experience.

What Circuits Are Involved?

Sensory, cognitive, and motor circuits work together to produce each skill and behavior.

Sensory Circuits

Receive and register relevant information from the body and environment.

Cognitive Circuits

Interpret, organize, connect, remember, and use relevant information.

Motor Circuits

Plan, coordinate, and produce movements, speech, gestures, or responses.

These circuits learn from experience. Repeated, appropriately matched experiences can build and change the pathways used for a skill or behavior.

What Type of Learning Is Needed?

Instructional Target

Build

The learner does not yet have the targeted skill or behavior.

Strengthen

The learner can perform the skill or behavior, but inconsistently.

Expand

The learner can perform it in one context, but not in others.

Time

The learner acquires it, but cannot retain or access it reliably.

Replace

A harmful or ineffective behavior is meeting an underlying need.

How Is Teaching Organized?

The teaching sequence matches instruction to the learner and the neural-circuit change needed.

Identify

Select the specific skill or behavior that instruction will target.

Define

Clarify the developmental goal and circuit change needed.

Apply

Use the teaching strategies outlined in NeuroToggle® Book 2.

Refine

Adjust instruction based on the learner’s response.

Explore the NeuroToggle® Resources

Begin with the learning foundations, continue with the complete instructional system, and use the toolkit to support application.

The Foundation

Book 1

Neuroplasticity, neurodivergent learning, and teaching principles.

The System

Book 2

The complete NeuroToggle® framework for structured instruction.

The Application

Educator Toolkit

Tools for assessment, planning, implementation, and monitoring.

Options for Comorbid Conditions

Target the Medical Condition

Comorbid medical conditions require targeted medical intervention from properly licensed medical professionals. Evaluation and treatment depend on the specific condition, symptoms, underlying mechanism, and established standard of care.

Condition-Specific Care

Medical Intervention Is Selected for the Condition

Pain, gastrointestinal symptoms, sleep disorders, seizures, dysautonomia, immune conditions, psychiatric conditions, metabolic disorders, nutritional problems, and other comorbidities require appropriate medical evaluation and treatment based on the condition involved.

The presence of autism does not make these conditions autism traits or remove the need to investigate and treat the underlying medical problem.

Whole Profile

Medical Conditions Can Affect Autism Support Needs

Pain, neurological dysfunction, gastrointestinal distress, sleep disruption, autonomic symptoms, psychiatric symptoms, or other medical effects can alter communication, behavior, regulation, learning, mobility, independence, and participation.

Treating a comorbid condition may therefore improve function without implying that the medical intervention is treating autism itself.

Options for Trait Clustering

Investigate the Shared Upstream Mechanisms

Kitzerow’s Autism and the Comorbidities Cascade investigates why particular autism-related and comorbid traits repeatedly occur together and whether multiple downstream outcomes share upstream regulatory, biochemical, or systems-biology mechanisms.

Move Upstream Before Multiple Outcomes Are Produced

The Cascade proposes that several traits and comorbid conditions may sometimes emerge downstream of shared biological nodes. If research continues to support that architecture, those nodes may become targets for eventual clinical translation.

Shared Upstream Node
Multiple Biochemical Pathways
Multiple Biological Systems
Multiple Physiological Effects
Multiple Individual Traits
Recurring Trait Clusters and Comorbid Conditions

Research Is Moving Across These Target Levels

Current autism research programs are increasingly examining genes and proteins, developmental systems, biological pathways, meaningful subgroups, biomarkers, functional outcomes, and targeted intervention rather than treating every downstream trait as an isolated research problem.

ARIA

Therapy Development Across Biological Levels

The ARIA Roadmap is building a therapy-development pipeline spanning genetic medicines, protein interactions, developmental neurobiology, neuromodulation, communication, and clinical trials.

This places genes, proteins, neural systems, downstream mechanisms, functional outcomes, and clinical translation within the same broader research pipeline.

Explore ARIA Research Hubs →
IACC

Biology, Biomarkers and Targeted Intervention

The IACC strategic planning process prioritizes research into biological links between autism and co-occurring conditions, how genetic and environmental factors act through biological mechanisms, and how those effects change across development and the lifespan.

It also identifies biomarkers, meaningful biological subgroups, treatment response, and more targeted medical, developmental, and educational interventions as research priorities.

Explore IACC →

ARIA and IACC are pursuing research and clinical-translation directions across several of the same biological target levels represented in the Cascade. These include genes and proteins, biological mechanisms, systems and pathways, biomarkers, functional outcomes, and targeted interventions. Their work does not by itself establish the Cascade or validate every proposed node.

These Remain Research Targets

The proposed shared upstream mechanisms are not established treatments. They remain research targets for eventual clinical translation if research continues to support the proposed relationships.

Clinical translation would require continued validation of the biological nodes, measurable biomarkers identifying the relevant dysregulation, evidence that modifying the target changes downstream physiology, appropriate identification of the individuals for whom the mechanism applies, and demonstration of safety and meaningful clinical benefit.

8 · Biology, Systems Impact and Trait Clustering

What Does BioToggle® Organize Versus What Does the Cascade Explain?

BioToggle® organizes how regulatory and temporal biology changes biochemical pathway activity and which biological systems are impacted. Kitzerow’s Autism and the Comorbidities Cascade then follows those system-level effects through physiology to individual traits and investigates why particular traits cluster into recognized conditions.

Biological Foundation

Documented Biological Components

Genes code for proteins. Protein production and function can change with biological conditions. Proteins participate in biochemical pathways, and changes in pathway activity can affect multiple biological systems.

BioToggle®

From Regulation to Systems Impacted

BioToggle® organizes how regulatory-system activation and biological timing influence gene expression, protein and isoform behavior, biochemical pathway activity, and the biological systems affected downstream.

The Cascade

From Systems Impact to Trait Clustering

The Cascade follows those biological effects through systems biology to physiological impact, individual traits, and the mechanisms proposed to explain why traits repeatedly cluster into recognized diagnostic conditions.

BioToggle®

From Regulatory Change to Biological Systems Impacted

BioToggle® organizes the upstream regulatory process through biochemical pathway activity and identifies which biological systems those changes affect.

Regulatory-System Activation + Biological Timing
Gene Expression
Protein and Isoform Production and Function
Biochemical Pathway Activity
Biological Systems Impacted
Immune · Metabolism · Cellular Repair · Nervous System · Epigenetic / Genetic Protein Synthesis
Kitzerow’s Autism and the Comorbidities Cascade

From Systems Biology to Individual Traits

The Cascade begins with the systems affected by biochemical dysregulation and follows the predicted consequences across levels of biological organization.

Biological Systems Impacted
Systems-Biology Impact
Metabolic → Cellular → Tissue → Organ → Organism
Physiological Impact
Changes in function across neural and body systems
Individual Traits
Observable developmental, neurological, physiological, behavioral, and medical effects
Mechanisms of Trait Clustering
Investigate why particular downstream traits repeatedly occur together rather than appearing as isolated outcomes
Checklist-Defined Conditions
Recurring combinations of traits currently grouped clinically into recognized diagnoses and comorbid conditions

The Core Distinction

BioToggle® asks what changes upstream, how those changes move through biochemical pathways, and which biological systems are affected.

The Cascade asks what those system-level effects do across metabolism, cells, tissues, organs, and the organism, what physiological effects and individual traits result, and what mechanisms make those traits cluster into the checklist-defined conditions recognized clinically.

BioDials®: Why Biological Timing Matters

BioDials® organizes biological timing across ultradian, circadian, circannual, developmental, and aging-related cycles. Timing can influence when regulatory systems activate, how biochemical pathways respond, which systems are affected, and the downstream physiological consequences predicted by the Cascade.

9 · Development of the Model

How Was Kitzerow’s Autism and the Comorbidities Cascade Developed?

Kitzerow developed the Cascade using a comparative systems-biology approach. She first built a species-level biochemical reference network from uninterpreted UniProt protein data, then compared published autism and comorbid biomarker and gene findings against that network to identify converging points of dysregulation.

Who?

Kimberly Kitzerow

Kimberly Kitzerow is an educator who specializes in data synthesis. Her earlier work focused on skill and behavior development, including helping her nonverbal daughter develop speech and functional alternatives to harmful behaviors.

That educational work became NeuroToggle®. The biochemical Cascade developed later through a separate line of investigation.

Why?

An Unanswered Systems Question

Autism is identified through observable developmental traits, yet autistic people also experience recurring medical, neurological, psychiatric, metabolic, immune, gastrointestinal, and other comorbidities.

The central question became: why do particular developmental and medical traits repeatedly occur together?

How?

The Jigsaw Puzzle Methodology™

Kitzerow used uninterpreted protein data from UniProt to construct a biochemical network of human gene-coded proteins as a species-level reference.

She then compared published autism and comorbid biomarker findings and gene data against that reference network to identify where the findings converged and where dysregulation appeared within the larger biochemical system.

Explore the Jigsaw Puzzle Methodology™ →

Build the Species-Level Reference
Construct a biochemical network from uninterpreted UniProt data on human gene-coded proteins
Map Functional Biology
Organize protein functions, pathways, induction conditions, isoforms, cells, tissues, and physiological effects
Compare Autism and Comorbid Data
Map published biomarker and gene findings onto the species-level reference
Identify Points of Dysregulation
Find convergence across proteins, pathways, regulatory states, tissues, and physiological effects
Organize the Regulatory Pattern
BioToggle® organizes regulatory-system and biological-timing relationships through biochemical pathway impact and the biological systems affected
Build the Cascade Prediction
Follow system-level effects through physiology, individual traits, and the mechanisms proposed to explain recurring trait clusters

Her Daughter Was the Beginning of the Work, Not Evidence for the Cascade

Kimberly’s work began with trying to understand how to help her daughter develop skills. That experience contributed to NeuroToggle®, but it did not establish the biochemical model.

The Cascade was developed later through comparison of published biomarker and gene findings against the independently constructed species-level biochemical reference network.

Important

This page is an educational, plain-language guide to autism, autism support needs, autism comorbidities, NeuroToggle®, BioToggle®, BioDials®, the Jigsaw Puzzle Methodology™, and Kitzerow’s Autism and the Comorbidities Cascade. It does not provide medical diagnosis, treatment, or individualized medical advice.

Kimberly Kitzerow is an educator and researcher, not a medical provider. Kitzerow diverts all medical guidance, diagnosis, treatment decisions, medication questions, testing decisions, vaccine-related medical questions, supplement use, diet-based medical interventions, and other individualized healthcare matters to properly licensed medical professionals.

BioToggle®, BioDials®, and Kitzerow’s Autism and the Comorbidities Cascade are frameworks used to organize and investigate biological relationships. The Cascade remains theoretical and is not an established autism diagnostic or treatment protocol.

NeuroToggle® is an educational system that matches teaching strategies to the neural circuit changes they influence to optimize outcomes for skill and behavior development. It is not a medical treatment for autism development. It is not a medical treatment for autism or its comorbidities.

Nonverbal Autism

Understanding Nonverbality as an Autism Comorbidity

Nonverbality, the inability to produce speech sounds, is not the absence of understanding. It is a breakdown in the pathways required to produce speech.

Speech-Motor Pathways

Speech is produced through speech-motor pathways.

When a child is nonverbal, the issue is not whether these pathways exist, but which part of the pathway is not functioning as expected.

The challenge is that there is currently no clear protocol to identify which mechanism is affected in each individual nonverbal child.

Learn About Speech-Motor Mechanisms