Related Experiment Video
Updated: Dec 14, 2025

Pre-Implantation Genetic Testing for Aneuploidy on a Semiconductor Based Next-Generation Sequencing Platform
Published on: August 17, 2022
Deciphering the Invdupdel(8p) Genotype-Phenotype Correlation: Our Opinion
Manuela Lo Bianco1, Davide Vecchio2, Tiziana A Timpanaro3
1Postgraduate Training Program in Pediatrics, Department of Clinical and Experimental Medicine, University of Catania, 95100 Catania, Italy.
This study details a rare 8p inverted duplication/deletion (invdupde[8p]) chromosomal rearrangement. The findings expand understanding of the invdupde[8p] genotype-phenotype relationship by describing a unique patient case.
Area of Science:
- Genetics
- Developmental Biology
- Clinical Medicine
Background:
- The 8p inverted duplication/deletion (invdupde[8p]) is a rare chromosomal rearrangement associated with neurodevelopmental delay, cognitive impairment, congenital heart defects, brain abnormalities, facial dysmorphisms, and skeletal malformations.
- The complex clinical presentation suggests a link to the underlying chromosomal rearrangement architecture.
Purpose of the Study:
- To better define the clinical and diagnostic pathways for invdupde[8p].
- To describe a patient with a de novo invdupde[8p] exhibiting previously undocumented clinical features.
- To perform genotype-phenotype correlation analysis to refine understanding of this condition.
Main Methods:
- Case report of a patient with de novo invdupde[8p].
- Extensive genotype-phenotype correlation analysis.
- Review of existing scientific literature on invdupde[8p] cases.
Main Results:
- Detailed description of a patient with a novel presentation of invdupde[8p].
- Comparison of the patient's features with previously reported cases.
- The patient's clinical expressiveness was placed in an intermediate position within the known spectrum.
Conclusions:
- This case expands the known clinical spectrum of invdupde[8p].
- The findings contribute to a broader understanding of the genotype-phenotype relationship in invdupde[8p].
- Further genotype-phenotype correlation studies are warranted to fully characterize this rare chromosomal disorder.
Related Concept Videos
Gene Duplication and Divergence
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
Genomic Imprinting and Inheritance
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Comparing Copy Number Variations and SNPs
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon...
Gene Conversion
Incomplete Dominance

