Subtopic Deep Dive
Hirschsprung Disease Genetics
Research Guide
What is Hirschsprung Disease Genetics?
Hirschsprung disease genetics studies genetic mutations in genes like RET, EDNRB, and SOX10 that cause aganglionosis in the enteric nervous system due to failed neural crest cell migration.
Hirschsprung disease (HSCR) occurs in 1/5000 live births as a neurocristopathy with absence of enteric ganglia (Amiel et al., 2007, 1193 citations). Key genes include RET enhancers (Emison et al., 2005, 463 citations), SOX10 in Waardenburg-Hirschsprung cases (Pingault et al., 1998, 817 citations), and EDNRB/EDN3 in Shah-Waardenburg syndrome (Edery et al., 1996, 457 citations). Over 20 genes identified through familial and genome-wide studies (Badner et al., 1990, 436 citations).
Why It Matters
Genetic insights enable prenatal screening and risk stratification for HSCR families, reducing surgical interventions (Amiel et al., 2007). RET enhancer mutations explain 20-30% of sporadic cases and sex bias, guiding targeted therapies (Emison et al., 2005). SOX10 and EDN3 findings support gene therapy trials for neurocristopathies and associated syndromes like Waardenburg (Pingault et al., 1998; Edery et al., 1996). Single-cell mapping reveals ENS progenitor deficits, informing stem cell models (Elmentaite et al., 2021).
Key Research Challenges
Incomplete Penetrance Modeling
HSCR shows variable expressivity and sex-dependent penetrance, complicating inheritance models (Badner et al., 1990). RET enhancer variants contribute only partially to heritability (Emison et al., 2005). Familial studies struggle with oligogenic interactions (Amiel et al., 2007).
Rare Variant Detection
Low-frequency mutations in SOX10 and EDNRB evade standard GWAS in sporadic cases (Pingault et al., 1998; Edery et al., 1996). Whole-genome sequencing needed for non-coding enhancers (Emison et al., 2005). Syndrome overlaps like Waardenburg mask isolated HSCR genetics (Pingault et al., 2010).
Neural Crest Pathogenesis
Mouse models like Dom show SOX10 disruption in crest migration but human translation limited (Southard-Smith et al., 1998). Glial neurogenesis post-injury suggests therapeutic windows, untested in HSCR (Laranjeira et al., 2011). Single-cell atlases highlight spatiotemporal deficits (Elmentaite et al., 2021).
Essential Papers
Hirschsprung disease, associated syndromes and genetics: a review
Jeanne Amiel, Eileen Sproat-Emison, M.‐M. Garcia‐Barceló et al. · 2007 · Journal of Medical Genetics · 1.2K citations
Hirschsprung disease (HSCR, aganglionic megacolon) represents the main genetic cause of functional intestinal obstruction with an incidence of 1/5000 live births. This developmental disorder is a n...
SOX10 mutations in patients with Waardenburg-Hirschsprung disease
Véronique Pingault, Nadège Bondurand, Kirsten Kuhlbrodt et al. · 1998 · Nature Genetics · 817 citations
SOX10 mutation disrupts neural crest development in Dom Hirschsprung mouse model
E. Michelle Southard‐Smith, Lidia Kos, William J. Pavan · 1998 · Nature Genetics · 735 citations
Cells of the human intestinal tract mapped across space and time
Rasa Elmentaite, Natsuhiko Kumasaka, Kenny Roberts et al. · 2021 · Nature · 634 citations
Review and update of mutations causing Waardenburg syndrome
Véronique Pingault, D. Ente, Florence Dastot‐Le Moal et al. · 2010 · Human Mutation · 597 citations
International audience
Hirschsprung disease, associated syndromes, and genetics: a review
Jeanne Amiel, Stanislas Lyonnet · 2001 · Journal of Medical Genetics · 477 citations
Hirschsprung disease (HSCR, aganglionic megacolon) is the main genetic cause of functional intestinal obstruction with an incidence of 1/5000 live births. This developmental disorder is a neurocris...
A common sex-dependent mutation in a RET enhancer underlies Hirschsprung disease risk
E Emison, Andrew S. McCallion, Carl Kashuk et al. · 2005 · Nature · 463 citations
Reading Guide
Foundational Papers
Start with Amiel et al. (2007, 1193 citations) for gene overview, then Badner et al. (1990, 436 citations) for inheritance, and Pingault et al. (1998, 817 citations) for SOX10 role.
Recent Advances
Elmentaite et al. (2021, 634 citations) for intestinal tract cell maps; Laranjeira et al. (2011, 405 citations) for ENS glial responses.
Core Methods
Segregation analysis (Badner et al., 1990); enhancer sequencing (Emison et al., 2005); neural crest mouse models (Southard-Smith et al., 1998); single-cell RNA-seq (Elmentaite et al., 2021).
How PapersFlow Helps You Research Hirschsprung Disease Genetics
Discover & Search
Research Agent uses searchPapers('Hirschsprung RET enhancer mutations') to retrieve Emison et al. (2005), then citationGraph to map 463 citing papers on sex-dependent risks, and findSimilarPapers for EDNRB studies like Edery et al. (1996). exaSearch uncovers rare familial analyses beyond PubMed.
Analyze & Verify
Analysis Agent runs readPaperContent on Amiel et al. (2007) to extract 20+ HSCR genes, verifies RET penetrance claims via verifyResponse (CoVe) against Badner et al. (1990), and uses runPythonAnalysis for citation trend stats with pandas. GRADE grading scores SOX10 evidence as high from Pingault et al. (1998).
Synthesize & Write
Synthesis Agent detects gaps in post-2015 RET therapy trials, flags SOX10-Waardenburg contradictions via exportMermaid timelines. Writing Agent applies latexEditText to draft reviews, latexSyncCitations for Amiel et al. (2007), and latexCompile for publication-ready manuscripts with ENS diagrams.
Use Cases
"Statistical analysis of HSCR inheritance patterns from Badner 1990 and Emison 2005"
Research Agent → searchPapers → Analysis Agent → runPythonAnalysis (pandas segregation analysis on family data) → matplotlib heritability plots exported as CSV.
"Compile LaTeX review of SOX10 mutations in Waardenburg-Hirschsprung"
Synthesis Agent → gap detection → Writing Agent → latexEditText (insert Pingault 1998 summary) → latexSyncCitations → latexCompile → PDF with gene tables.
"Find code for Hirschsprung mouse model simulations from Southard-Smith 1998"
Research Agent → paperExtractUrls → Code Discovery → paperFindGithubRepo → githubRepoInspect → verified neural crest migration scripts.
Automated Workflows
Deep Research workflow scans 50+ HSCR papers via searchPapers → citationGraph, generating structured reports on RET/EDNRB interactions with GRADE scores. DeepScan applies 7-step CoVe to validate SOX10 claims from Pingault et al. (1998) against mouse models. Theorizer hypothesizes glial therapy from Laranjeira et al. (2011) + Elmentaite et al. (2021) single-cell data.
Frequently Asked Questions
What defines Hirschsprung disease genetics?
Study of mutations in RET, SOX10, EDNRB causing enteric aganglionosis via neural crest defects (Amiel et al., 2007).
What are main methods in HSCR genetics?
Complex segregation analysis (Badner et al., 1990), GWAS for enhancers (Emison et al., 2005), and mouse models for SOX10 (Southard-Smith et al., 1998).
What are key papers?
Amiel et al. (2007, 1193 citations) reviews genes; Pingault et al. (1998, 817 citations) identifies SOX10; Emison et al. (2005, 463 citations) details RET enhancers.
What open problems exist?
Full oligogenic models for incomplete penetrance; human validation of glial neurogenesis therapies; rare variant effects in sporadic cases (Laranjeira et al., 2011).
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