DeCure for Intellectual developmental disorder, autosomal dominant 66
DeCure's autonomous Psychiatry AI scientist is researching a drug-repurposing hypothesis for intellectual developmental disorder, autosomal dominant 66 — 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 moduleIntellectual developmental disorder, autosomal dominant 66 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 intellectual developmental disorder, autosomal dominant 66 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
ATPase plasma membrane Ca2+ transporting 1 (ATP2B1) — ATP2B1 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 apo structuredrag to rotate · scroll to zoom
RCSB Protein Data Bank · entry 6A69 · 4.11 Å · ligand none (apo structure). Experimental structure, not a prediction.
What the evidence adds up to
The three abstracts on autosomal dominant intellectual developmental disorder describe different genetic causes and do not report any drug treatment for the condition itself. One abstract reports that among 48 children with SYNGAP1 gene mutations, 40 had seizures with a mean onset age of 31.4 months. Of 33 children who received antiepileptic medication, 28 (85%) showed a response to valproic acid and 16 (48%) achieved complete seizure control with valproic acid monotherapy or combined therapy. This is a seizure management outcome, not a treatment for the intellectual disability. The other abstracts identify de novo nonsense mutations in GRIN2B (c.3912C>G, p.Tyr1304Ter) and TRIP12 (c.40C>T, p.Arg14X) as causes of autosomal dominant intellectual disability in individual patients, but no treatment data are provided.
A 2023 abstract on NSUN6 describes biallelic variants causing an autosomal recessive neurodevelopmental disorder, not the autosomal dominant form. Three consanguineous families with homozygous NSUN6 variants were identified; two variants were loss-of-function and one missense variant lost enzymatic activity. Affected individuals had developmental delay, intellectual disability, motor delay, and behavioural anomalies. Drosophila with homozygous ablation of the NSUN6 ortholog showed locomotion and learning impairment. No drug intervention was tested.
Two general review abstracts note that intellectual disability affects 1% of the population globally and that pharmacological interventions are limited, partly due to poor understanding of the disorder and the heterogeneous nature of its causes. One abstract discusses balanced chromosomal translocations as a rare cause of intellectual disability and mentions that new technologies like long-read genome sequencing could detect breakpoint effects, but no treatment is described.
What is still missing: no clinical trials have tested any drug for the core intellectual disability in these autosomal dominant forms. The only pharmacological data concern seizure control with valproic acid in SYNGAP1 patients, not cognitive improvement. No funding for a repurposing trial, no patient stratification strategy, and no preclinical work testing a specific drug in models of these mutations have been reported in these abstracts.
Evidence
Retrieved by DeepSearch across 234,678,978 indexed works and resolved on OpenAlex — ranked by citations, including the results that did not work.
Genetics in Medicine · 2023 · 20 citations · open access
Biallelic variants in NSUN6 cause an autosomal recessive neurodevelopmental disorder
AbstractPURPOSE: 5-methylcytosine RNA modifications are driven by NSUN methyltransferases. Although variants in NSUN2 and NSUN3 were associated with neurodevelopmental diseases, the physiological role of NSUN6 modifications on transfer RNAs and messenger RNAs remained elusive. METHODS: We combined exome sequencing of consanguineous families with functional characterization to identify a new neurodevelopmental disorder gene. RESULTS: We identified 3 unrelated consanguineous families with deleterious homozygous variants in NSUN6. Two of these variants are predicted to be loss-of-function. One maps to the first exon and is predicted to lead to the absence of NSUN6 via nonsense-mediated decay, whereas we showed that the other maps to the last exon and encodes a protein that does not fold correctly. Likewise, we demonstrated that the missense variant identified in the third family has lost its enzymatic activity and is unable to bind the methyl donor S-adenosyl-L-methionine. The affected individuals present with developmental delay, intellectual disability, motor delay, and behavioral anomalies. Homozygous ablation of the NSUN6 ortholog in Drosophila led to locomotion and learning impairment. CONCLUSION: Our data provide evidence that biallelic pathogenic variants in NSUN6 cause one form of autosomal recessive intellectual disability, establishing another link between RNA modification and cognition.
[Autosomal dominant mental retardation type 5 caused by <i>SYNGAP1</i> gene mutations: a report of 8 cases and literature review].
AbstractOBJECTIVES: gene mutations. METHODS: gene mutations who were diagnosed and treated in the Department of Pediatrics, Xiangya Hospital of Central South University. RESULTS: gene mutations (including the children in this study), among whom 40 had seizures, and the mean age of onset of seizures was 31.4 months. Frameshift mutations (15/48, 31%) and nonsense mutations (19/48, 40%) were relatively common in these children. In terms of treatment, among the 33 children with a history of epileptic medication, 28 (28/33, 85%) showed response to valproic acid antiepileptic treatment and 16 (16/33, 48%) achieved complete seizure control after valproic acid monotherapy or combined therapy. CONCLUSIONS: gene mutations tend to have an early age of onset, and most of them are accompanied by seizures. These children mainly have frameshift and nonsense mutations. Valproic acid is effective for the treatment of seizures in most children.
Autosomal Dominant Intellectual Development Disorder-6 (MRD6) Without Seizures Linked to a De Novo Mutation in the grin2b Gene Revealed by Exome Sequencing: A Case Report of a Moroccan Child
AbstractAutosomal dominant intellectual development disorder-6 (MRD6) arises from a grin2b gene mutation, inducing neurodevelopmental issues. The effects of MRD6 encompass cognitive disabilities, seizures, muscle tone decline, and autism-like traits. Its severity ranges from mild impairment to severe epilepsy. The disorder's rarity is emphasized by roughly 100 reported GRIN2B-related cases, spotlighting the gene's significance in brain development. We present the case of a three-year-old Moroccan boy who was referred to a neuropediatric department for a molecular diagnosis. Initial genetic testing yielded inconclusive results, and subsequent tests for Angelman syndrome and metabolic diseases showed no abnormalities. Given the complexity of the disorder, exome sequencing was employed to identify the underlying genetic cause. Exome sequencing identified a nonsense (STOP) mutation c.3912C>G (p.Tyr1304Ter) in the grin2b gene in the heterozygous state known to be present in MRD6 (Online Mendelian Inheritance in Man (OMIM) 613970). The family segregation study shows that this is a de novo variant, which is confirmed by Sanger sequencing. This variant has not been previously reported in the GnomAD database. Based on current scientific knowledge, the variant is considered pathogenic (PVS1, PS2, PM2, PP3, PP5) according to the criteria of the American College of Medical Genetics and Genomics (ACMG). The mutation in the grin2b gene (p.Tyr1304Ter) was predicted to be deleterious through bioinformatics analysis tools. This study highlights the crucial role of the grin2b gene in normal brain development and communication within the nervous system. It also sheds light on the impact of a novel genetic mutation, identified through exome sequencing, on causing an intellectual developmental disorder in a child patient from Morocco.
[Analysis of clinical features and ZBTB18 gene variant in a child with autosomal dominant mental disorder type 22].
AbstractOBJECTIVE: To analyze the clinical characteristics and ZBTB18 gene variant in a child with epilepsy and global developmental delay. METHODS: Clinical data and laboratory examination of the patient were reviewed. Whole exome sequencing (WES) was also carried out for the family trio. RESULTS: The main manifestations of the child included global developmental delay, short stature, epileptic seizures. EEG revealed frequent occurrence of sharp (slow) waves in the right central region during sleeping, with sharp waves occasionally seen in the frontal and right posterior temporal regions. Cranial MRI has shown no obvious abnormality. WES has identified a de novo pathogenic variant in the ZBTB18 gene [NM_205768.3: exon 2: c.1282_1283del (p.Phe428Leufs*72)]. Based on the guidelines from American College of Medical Genetics and Genomics (ACMG), the variant was classified as pathogenic (PS2+PVS1_Moderate+PM2_Supporting). Following treatment with levetiracetam and rehabilitation, the seizures have been controlled for nearly half a year, with improvement of the psychomotor and language development. So far 28 children have been discovered with ZBTB18 gene mutations, and there was a significant difference in the clinical phenotypes of motor retardation, language retardation and epilepsy between those harboring frameshift/nonsense mutations and missense mutations. CONCLUSION: The c.1282_1283del (p.Phe428leufs *72) variant of the ZBTB18 probably underlay the autosomal dominant mental disorder type 22 in this child. Compared with missense mutations, frameshift/nonsense mutations may predispose more to motor retardation, delayed language development and epilepsy.
[Intellectual disability due to heterozygous c.40C>T variant of TRIP12 gene in a patient].
AbstractOBJECTIVE: To explore the genetic basis for a patient with intellectual disability. METHODS: Whole exome sequencing and Sanger sequencing were carried out for the patient. The result was verified in her family. RESULTS: DNA sequencing revealed that the patient has carried a heterozygous nonsense c.40C>T (p.Arg14X) variant of the TRIP12 gene, which was de novo in origin. The variant was unrecorded in the Human Gene Mutation Database. Based on the American College of Medical Genetics and Genomics standards and guidelines, the variant was predicted to be pathogenic (PVS1+ PS2+ PP3). CONCLUSION: The patient was diagnosed with autosomal dominant intellectual disability due to heterozygous c.40C>T variant of the TRIP12 gene.
Iowa Research Online (The University of Iowa) · 2022 · 0 citations · open access
Behavioral and brain phenotypes of mouse models of Bardet-Biedl Syndrome
AbstractIntellectual disability (ID) is one of the most common neurodevelopmental disorders, affecting 1% of the population globally. Clinically, ID is characterized by a deficit in intellectual functioning and adaptive functioning. There are limited pharmacological interventions for ID, partially due to a poor understanding of ID and the heterogeneous nature of ID In addition, there are limited mouse models of ID.
DOAJ (DOAJ: Directory of Open Access Journals) · 2023 · 0 citations · open access
How might a balanced chromosomal translocation lead to a spectrum of intellectual disabilities in newborns?
AbstractBackground: Intellectual disability (ID) consists of a broad range of disorders characterized by low general intellectual functioning (IQ below 70). ID etiologic causes are heterogeneous, ranging from environmental to chromosomal and monogenic conditions. Although many autosomal genes responsible for ID are expected, but only a small number of these have been identified and up to now most progress has been made in the area of X-linked translocation ID; but many autosomal chromosome genes play a crucial role in the development of a central nervous system. Any change which lead to lose or reduce the function or change the expression of them; high or low, even have a damaging effect on the functional protein might lead to different phenotype like developmental delay, growth retardation or intellectual disabilities. Result & conclusion: In this paper, we discuss the importance of balanced chromosomal translocations in the etiologic cause of newborn intellectual disabilities. Balanced translocation is the result of breaking off two chromosomes and reattached in a way that the sections of two chromosomes have switched places. These rearrangements are found as de novo events in 1/2,000 live births and give rise to some congenital anomalies which is the product of submicroscopic deletions, duplications, inversion or disruption, activation, or inactivation of a gene or different genes located at or near the breakpoints in the basepair level. These apparently balanced translocations due to positional effect lead to occur abnormal phenotype. In conclusion, Cryptic genomic imbalances cause mentality are very rare condition but new technologies like NGS long-read genome sequencing could detect rapid breakpoint effects on live birth healthy and discover a new way for prenatal diagnosis.
Journal of genetic medicine · 2023 · 0 citations · open access
A Korean case of <i>CTCF</i> related neurodevelopmental disorders
AbstractCCCTC-binding factor (CTCF) is a transcriptional regulator that binds to a complex DNA motif in various orientations and plays a crucial role in regulating gene expression, chromatin restructuring, and developmental processes.Mutations in the CTCF are associated with neurodevelopmental disorders.Here we report the first Korean case with a de novo heterozygous variant in the CTCF (c.1025G>A; p.Arg342His).She showed global developmental delay, failure to thrive, and dysmorphic face, which are phenotypes consistent with previous reports in the autosomal dominant intellectual developmental disorder 21 (MIM 615502).She also showed clinical features not previously reported, such as antral web and tracheobronchomalacia.Our case follows suit and expands understanding of this rare disorder by reporting common features and, on the other hand, unreported concomitant congenital anomalies.
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.
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