Subtopic Deep Dive

Hailey-Hailey Disease
Research Guide

What is Hailey-Hailey Disease?

Hailey-Hailey Disease (HHD) is an autosomal dominant skin disorder caused by mutations in ATP2C1 encoding a secretory pathway Ca2+/Mn2+-ATPase (SPCA1) pump, leading to impaired calcium homeostasis, acantholysis, and chronic vesicles in intertriginous areas.

HHD features suprabasal epidermal cell separation due to disrupted keratinocyte adhesion from ATP2C1 dysfunction (Sudbrak et al., 2000, 313 citations). Research identifies over 100 ATP2C1 mutations and links SPCA1 loss to Golgi trafficking defects and DNA damage response impairment (Micaroni et al., 2016, 55 citations; Cialfi et al., 2016, 29 citations). Approximately 200 papers explore pathogenesis, mosaicism, and allelic disorders as of 2023.

Curated Papers

Key Challenges

Why It Matters

HHD studies reveal calcium pump roles in epidermal homeostasis, informing therapies for acantholytic disorders like Darier disease (Dode et al., 2003, 147 citations). Segmental HHD via allelic loss validates type 2 mosaicism concepts, aiding diagnosis of Blaschko-linear variants (Poblete-Gutiérrez et al., 2004, 147 citations). SPCA1 isoform research links Golgi dysfunction to skin vesicle formation, impacting treatments for calcium signaling defects (Micaroni et al., 2016, 55 citations).

Key Research Challenges

ATP2C1 Mutation Functional Impacts

Diverse ATP2C1 mutations variably impair SPCA1 Ca2+ pumping, complicating genotype-phenotype correlations. Steady-state kinetic analyses show isoform-specific defects in related SERCA2 pumps (Dode et al., 2003). Yeast models reveal trafficking roles but lack human epidermal context (Ton and Rao, 2004).

Segmental Mosaicism Mechanisms

Type 2 segmental HHD arises from postzygotic allelic loss, following Blaschko lines. Molecular confirmation challenges autosomal dominant models (Poblete-Gutiérrez et al., 2004). Cutaneous mosaicism classifications highlight timing of somatic events (Kouzak et al., 2013).

Downstream Epidermal Pathogenesis

SPCA1 loss disrupts DNA damage response and lamellar body biogenesis, causing acantholysis. Golgi-lysosome defects alter skin barrier formation (Cialfi et al., 2016; Mahanty and Setty, 2021). Therapeutic targeting remains elusive due to incomplete homeostasis models.

Essential Papers

Hailey-Hailey disease is caused by mutations in ATP2C1 encoding a novel Ca2+ pump

Ralf Sudbrak · 2000 · Human Molecular Genetics · 313 citations

Hailey–Hailey disease (HHD) is an autosomal dominant skin disorder characterized by suprabasal cell separation (acantholysis) of the epidermis. Previous genetic linkage studies localized the gene t...

Dissection of the Functional Differences between Sarco(endo)plasmic Reticulum Ca2+-ATPase (SERCA) 1 and 2 Isoforms and Characterization of Darier Disease (SERCA2) Mutants by Steady-state and Transient Kinetic Analyses

Leonard Dode, Jens Peter Andersen, Natalie Leslie et al. · 2003 · Journal of Biological Chemistry · 147 citations

Steady-state and rapid kinetic studies were conducted to functionally characterize the overall and partial reactions of the Ca2+ transport cycle mediated by the human sarco(endo)plasmic reticulum C...

Allelic loss underlies type 2 segmental Hailey-Hailey disease, providing molecular confirmation of a novel genetic concept

Pamela Poblete‐Gutiérrez, T. Wiederholt, Arne König et al. · 2004 · Journal of Clinical Investigation · 147 citations

Hailey-Hailey disease (HHD) is an autosomal dominant trait characterized by erythematous and oozing skin lesions preponderantly involving the body folds. In the present unusual case, however, unila...

Functional expression of heterologous proteins in yeast: insights into Ca<sup>2+</sup> signaling and Ca<sup>2+</sup>-transporting ATPases

Van‐Khue Ton, Rajini Rao · 2004 · American Journal of Physiology-Cell Physiology · 101 citations

The baker's yeast Saccharomyces cerevisiae is a well-developed, versatile, and widely used model organism. It offers a compact and fully sequenced genome, tractable genetics, simple and inexpensive...

Genitoperineal papular acantholytic dyskeratosis is allelic to Hailey-Hailey disease

C. Pernet, D. Bessis, Magali Savignac et al. · 2012 · British Journal of Dermatology · 55 citations

Journal Article Genitoperineal papular acantholytic dyskeratosis is allelic to Hailey–Hailey disease Get access C. Pernet, C. Pernet Department of Dermatology, St Eloi Hospital, 80 avenue A. Fliche...

ATP2C1 gene mutations in Hailey–Hailey disease and possible roles of SPCA1 isoforms in membrane trafficking

Massimo Micaroni, Gilberta Giacchetti, Roberto Plebani et al. · 2016 · Cell Death and Disease · 55 citations

Abstract ATP2C1 gene codes for the secretory pathway Ca 2+ /Mn 2+ -ATPase pump type 1 (SPCA1) localizing at the golgi apparatus. Mutations on the human ATP2C1 gene, causing decreased levels of the ...

Cutaneous mosaicisms: concepts, patterns and classifications

Samara Silva Kouzak, Marcela Sena Teixeira Mendes, Izelda Maria Carvalho Costa · 2013 · Anais Brasileiros de Dermatologia · 50 citations

A mosaic is an organism composed of two or more genetically distinct cell populations derived from a genetically homogeneous zygote. Cutaneous mosaicisms are the clinical expressions of these disor...

Reading Guide

Foundational Papers

Start with Sudbrak et al. (2000) for ATP2C1 discovery and genetics (313 citations), then Poblete-Gutiérrez et al. (2004) for mosaicism (147 citations), followed by Dode et al. (2003) for pump kinetics (147 citations).

Recent Advances

Micaroni et al. (2016) on SPCA1 trafficking (55 citations); Cialfi et al. (2016) on DNA damage (29 citations); Mahanty and Setty (2021) on lamellar bodies (26 citations).

Core Methods

Genetic linkage and sequencing for mutations; yeast S. cerevisiae expression for functional assays; steady-state kinetics for Ca2+ transport; mosaicism analysis via Blaschko lines.

How PapersFlow Helps You Research Hailey-Hailey Disease

Discover & Search

Research Agent uses searchPapers and citationGraph on 'ATP2C1 Hailey-Hailey' to map 313-citation foundational work by Sudbrak et al. (2000), then exaSearch uncovers 50+ mosaicism papers like Poblete-Gutiérrez et al. (2004). findSimilarPapers expands to allelic disorders such as Pernet et al. (2012).

Analyze & Verify

Analysis Agent applies readPaperContent to Sudbrak et al. (2000) abstracts, verifying mutation counts via verifyResponse (CoVe) against OpenAlex data. runPythonAnalysis processes Ca2+ kinetic data from Dode et al. (2003) with NumPy for pump efficiency stats. GRADE grading scores evidence strength for pathogenesis claims (A-level for genetic linkage).

Synthesize & Write

Synthesis Agent detects gaps in SPCA1 isoform trafficking via contradiction flagging across Micaroni et al. (2016) and Cialfi et al. (2016). Writing Agent uses latexEditText for HHD review sections, latexSyncCitations for 20+ refs, and latexCompile for polished drafts. exportMermaid visualizes acantholysis pathways from lamellar body papers.

Use Cases

"Analyze ATP2C1 mutation impacts on Ca2+ kinetics in HHD keratinocytes"

Research Agent → searchPapers('ATP2C1 kinetics') → Analysis Agent → readPaperContent(Dode et al., 2003) → runPythonAnalysis(pandas plot of SERCA vs SPCA1 rates) → matplotlib graph of pump defects.

"Draft LaTeX review on segmental Hailey-Hailey mosaicism"

Research Agent → citationGraph(Poblete-Gutiérrez et al., 2004) → Synthesis Agent → gap detection → Writing Agent → latexEditText(intro) → latexSyncCitations(10 mosaic papers) → latexCompile(PDF) → exportBibtex.

"Find GitHub code for yeast SPCA1 models in HHD research"

Research Agent → searchPapers(Ton and Rao, 2004) → paperExtractUrls → paperFindGithubRepo(S. cerevisiae Ca2+ ATPase) → githubRepoInspect(code for pump simulations) → runPythonAnalysis(replicate kinetics).

Automated Workflows

Deep Research workflow scans 50+ ATP2C1 papers via searchPapers → citationGraph → structured report on mutation spectra (Sudbrak et al., 2000 baseline). DeepScan applies 7-step CoVe to verify mosaicism claims in Poblete-Gutiérrez et al. (2004) with GRADE checkpoints. Theorizer generates hypotheses on SPCA1-DNA damage links from Cialfi et al. (2016) literature synthesis.

Try Doxa for Hailey-Hailey Disease Research

Frequently Asked Questions

What defines Hailey-Hailey Disease?

HHD is an autosomal dominant disorder from ATP2C1 mutations causing SPCA1 Ca2+ pump defects, resulting in epidermal acantholysis and vesicles (Sudbrak et al., 2000).

What are key methods in HHD research?

Genetic linkage mapped ATP2C1 to 3q21; yeast heterologous expression tests pump function (Sudbrak et al., 2000; Ton and Rao, 2004). Kinetic analyses dissect Ca2+ cycles (Dode et al., 2003).

What are foundational HHD papers?

Sudbrak et al. (2000, 313 citations) identified ATP2C1; Poblete-Gutiérrez et al. (2004, 147 citations) confirmed segmental mosaicism; Dode et al. (2003, 147 citations) analyzed related pumps.

What open problems exist in HHD?

Unclear how specific ATP2C1 mutations cause variable phenotypes; SPCA1 roles in lamellar biogenesis need epidermal models (Micaroni et al., 2016; Mahanty and Setty, 2021).