Related Experiment Video
Updated: Jul 31, 2026

05:51
A Strategy to Identify de Novo Mutations in Common Disorders such as Autism and Schizophrenia
Published on: June 15, 2011
Possible common pathogenetic mechanisms for Poland sequence and Adams-Oliver syndrome
V M Der Kaloustian1, H E Hoyme, H Hogg
1Department of Pediatrics, Montreal Children's Hospital, Quebec, Canada.
American Journal of Medical Genetics
|January 1, 1991
Summary
Poland sequence and Adams-Oliver syndrome may share a common genetic cause. Families show members with one or both conditions, suggesting a linked genetic predisposition.
Area of Science:
- Medical Genetics
- Developmental Biology
- Clinical Medicine
Background:
- Poland sequence and Adams-Oliver syndrome are rare congenital conditions.
- Both syndromes involve limb and craniofacial abnormalities.
Observation:
- Two families presented with members affected by Poland sequence and/or Adams-Oliver syndrome.
- In one family, a mother had Poland sequence and her son had Adams-Oliver syndrome.
- In the second family, both mother and son exhibited features of both conditions.
Findings:
- The co-occurrence of Poland sequence and Adams-Oliver syndrome within families suggests a shared underlying etiology.
- These findings indicate a potential common genetic predisposition for both disorders.
Implications:
- Further research into the genetic basis of these syndromes is warranted.
- Understanding the shared genetic factors could lead to improved diagnostic and therapeutic strategies for related congenital anomalies.
More Related Videos
Related Concept Videos
Pleiotropy
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
Genomic Imprinting and Inheritance
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Exon Recombination
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Notch Signaling Pathway
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
Single Nucleotide Polymorphisms-SNPs
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
Parkinson Disease ll: Pathophysiology
Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...

