DeCure's autonomous Rare AI scientist is researching a drug-repurposing hypothesis for acrocapitofemoral dysplasia — screening already-approved drugs against its 1-gene Open Targets disease module to publish open-access research. Research is fast; the path to publication is funded in milestone stages.
Disease moduleAcrocapitofemoral dysplasia maps to a 1-gene Open Targets module — the target space DeCure's AI scientist screens approved drugs against.
DeCure.ai methodSignature reversal (LINCS) plus network proximity (STRING) rank already-approved drugs likely to perturb this module — the same engine that produces DeCure.ai's repurposing hypotheses.
Repurposing thesisScreening approved medicines against this disease module, then publishing the evidence for the strongest candidate. Known pharmacology and human exposure data make the first question sharper — they do not establish safety or efficacy in a new indication.
Research record
01
ResearchComing soon
Candidate research + dossier — target rationale, drug-repurposing thesis and evidence pack.proof: Published dossier + on-chain hash
02
ValidationComing soon
In-vitro biological validation at a contract research org (CRO).proof: CRO contract + in-vitro report
03
Peer review & paperComing soon
Peer-reviewed paper published open-access (preprint + journal).proof: DOI + open-access link + on-chain hash
Current lead
No approved-drug candidate for acrocapitofemoral dysplasia is corroborated in the literature DeepSearch retrieved. Some conditions are managed with non-pharmacological care — a device, surgery or physical therapy — rather than a medicine; that may be the case here, or the literature we found may simply be too sparse yet to support a drug-repurposing angle.
Molecular view
Indian hedgehog signaling molecule (IHH) — IHH is one of the genes genetically linked to this disease in Open Targets — shown as context, not as a drug target we're pursuing: no approved-drug candidate for this disease is yet corroborated in the literature we found.
Loading structure…
helix sheet co3drag to rotate · scroll to zoom
RCSB Protein Data Bank · entry 3K7J · 1.9 Å · ligand CARBONATE ION (CO3). Experimental structure, not a prediction.
What the evidence adds up to
Acrocapitofemoral dysplasia is a rare autosomal recessive disorder characterised by postnatal onset of disproportionate short stature with short limbs, brachydactyly, cone-shaped epiphysis, narrow thorax, and relatively large head. As of 2025, only four homozygous missense mutations in the IHH gene have been reported worldwide. The first three were found in families of Belgian, Dutch, and Turkish ethnicity. The fourth, a novel homozygous missense variant c.518C>A; p.(Ala173Asp) in exon 2 of IHH, was identified in two affected individuals from a Pakistani family. Whole exome sequencing and Sanger sequencing confirmed the variant, which segregated within the family and was absent in unaffected ethnically matched controls. In silico modelling and molecular dynamics simulation indicated that the variant disturbs the core structure of the amino terminal domain and destabilises the loop region and surrounding area.
A separate 2024 case report describes a child born to consanguineous Syrian parents with a complex phenotype that includes skeletal dysplasia (small thorax and phalangeal shortening), cardiac anomalies, and sensorineural hearing loss. Molecular analysis identified three potentially disease-causing variants: a homozygous variant in IHH (associated with acrocapitofemoral dysplasia), a homozygous variant in TTC12B (associated with a form of short-rib thoracic dysplasia), and a heterozygous variant in COL11A1 (associated with Marshall syndrome, Stickler syndrome, and hearing loss). The authors propose that the blended phenotype results from the contribution of all three variants, illustrating the diagnostic challenge of correlating genotype and phenotype in the absence of a large segregating family.
No therapeutic interventions, drug repurposing attempts, or clinical trials for acrocapitofemoral dysplasia are described in these abstracts. No data on survival, response rates, or treatment outcomes are reported. The literature remains confined to genetic discovery and case description.
What is still missing is any funded research into disease-modifying treatments, a natural history study with quantitative endpoints, and a patient stratification system that could support future trial design. Without these, the condition remains a diagnostic category only.
Evidence
Retrieved by DeepSearch across 234,678,978 indexed works and resolved on OpenAlex — ranked by citations, including the results that did not work.
Molecular Genetics & Genomic Medicine · 2025 · 1 citations · open access
A Novel Biallelic Variant in <scp><i>IHH</i></scp> Causing Acrocapitofemoral Dysplasia in a Pakistani Family
AbstractBACKGROUND: Acrocapitofemoral dysplasia (ACFD) is a rare autosomal recessive disorder, characterized by postnatal onset of disproportionate short stature with short limbs, brachydactyly, cone-shaped epiphysis, narrow thorax, and relatively large head. To date, only three homozygous missense mutations have been reported in the signaling amino terminal domain (201-308 amino acids) of the IHH gene in three ACFD families from Belgian, Dutch, and Turkish ethnicities. METHODS: In the present study, we have investigated two patients in a Pakistani family affected with ACFD. Whole exome sequencing (WES) followed by Sanger sequencing was carried out for mutational screening. The variant was further validated by in silico modeling and molecular dynamics simulation analysis. RESULTS: Data analysis revealed a novel homozygous missense variant [c.518C>A; p.(Ala173Asp)] in exon 2 of the IHH (NM_002181.4) gene. The variant segregated within the family and was not observed in unaffected ethnically matched controls. In silico modeling and dynamic simulation analysis revealed that the variant disturbed the core structure of the domain and destabilized the loop region and the region surrounding the variant. CONCLUSION: This study reports the first case of ACFD from Pakistan and identifies the fourth novel missense variant in the IHH gene that led to the broadening of the phenotypic and genotypic spectrum of ACFD.
Molecular Syndromology · 2024 · 1 citations · open access
Co-Occurrence of Variants in 3 Genes in a Patient with Congenital Skeletal Dysplasia and Cardiac Anomalies: Diagnostic Challenge Posed by a Blended Phenotype
Abstract<p>Introduction: Blended phenotypes resulting from the contribution of two or more genetic variants to the disease of a patient pose a significant diagnostic challenge. Correlating between the phenotypes and the genotypes of the affected patients is difficult in these cases, especially in the absence of a large family segregating the condition. Case Presentation: We report a child born to consanguineous Syrian parents with a complex phenotype including a skeletal dysplasia, characterized by a small thorax and phalangeal shortening, as well as cardiac anomalies and sensorineural hearing loss. Molecular analysis identified the presence of three potentially disease-causing genetic variants. These include homozygous variants in the IHH and TTC12B genes, known to be associated with acrocapitofemoral dysplasia (OMIM# 607778) and a form of short-rib thoracic dysplasia (OMIM# 613819), respectively, in addition to a heterozygous variant in the COL11A1 gene, associated with dominant forms of skeletal dysplasia, such as Marshall (OMIM# 154780) and Stickler (OMIM# 608481) syndromes, and hearing loss (OMIM# 618533). Conclusion: We propose that the complex phenotype observed in the patient results from the contribution of l three of these variants. This case highlights some of the challenges encountered in the genetic counseling of families with rare genetic conditions. </p>
Supplementary Material for: Co-occurrence of variants in 3 genes in a patient with congenital skeletal dysplasia and cardiac anomalies: Diagnostic Challenge Posed by a Blended Phenotype
AbstractIntroduction: Blended phenotypes resulting from the contribution of two or more genetic variants to the disease of a patient pose a significant diagnostic challenge. Correlating between the phenotypes and the genotypes of the affected patients is difficult in these cases, especially in the absence of a large family segregating the condition. Case presentation: We report a child born to consanguineous Syrian parents with a complex phenotype including a skeletal dysplasia, characterized by a small thorax and phalangeal shortening, as well as cardiac anomalies, and sensorineural hearing loss. Molecular analysis identified the presence of three potentially disease-causing genetic variants. These include homozygous variants in the IHH and TTC12B genes, known to be associated with Acrocapitofemoral Dysplasia (OMIM# 607778) and a form of Short-Rib Thoracic Dysplasia (OMIM# 613819), respectively, in addition to a heterozygous variant in the COL11A1 gene, associated with dominant forms of skeletal dysplasia, such as Marshall (OMIM# 154780) and Stickler (OMIM# 608481) syndromes, and hearing loss (OMIM# 618533). Conclusion: We propose that the complex phenotype observed in the patient results from the contribution of l three of these variants. This case highlights some of the challenges encountered in the genetic counseling of families with rare genetic conditions.
Disease module: DeepOracle (Open Targets). Structures: RDKit from PubChem SMILES. Literature: retrieved by DeepSearch across 234,678,978 indexed works (targeted per-candidate search), resolved on OpenAlex.
DeCure is a research and publication project, not medical advice and not a treatment. "DeCure for X" describes a research goal, not a claim that a cure exists. Backing a cure is a contribution to fund the research — it is not an investment, and confers no yield, royalty, equity or IP ownership. Papers are published open-access by the DeCure.ai DAO.
