Related Experiment Video
Updated: Apr 19, 2026

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
Published on: August 20, 2019
Partial expression of the Papillon-Lefevre syndrome.
Muhammad Shanavas1, Laxmikanth Chatra2, Prashanth Shenai2
1Department of Oral Medicine and Radiology, Mahe Institute of Dental Sciences, Mahe, Pondicherry, India.
Papillon-Lefevre Syndrome (PLS) typically presents with skin and gum issues. This case report details a unique patient with PLS exhibiting only the characteristic skin findings, lacking the expected oral manifestations.
Area of Science:
- Genetics and Dermatology
- Oral Medicine and Periodontology
Background:
- Papillon-Lefevre Syndrome (PLS) is a rare autosomal recessive disorder.
- It is characterized by severe palmar-plantar hyperkeratosis and aggressive periodontitis.
- PLS affects approximately 1-4 individuals per million.
Observation:
- This report describes a unique case of a 28-year-old woman diagnosed with Papillon-Lefevre Syndrome.
- The patient presented with the pathognomonic dermatological features of PLS.
- Notably, the patient lacked the typical destructive periodontitis associated with the syndrome.
Findings:
- The case highlights a variant presentation of Papillon-Lefevre Syndrome.
- This suggests that the classic hallmarks of PLS may not always co-occur.
- The dermatological manifestations of PLS can be present without the oral pathology.
Implications:
- This atypical presentation expands the understanding of Papillon-Lefevre Syndrome's clinical spectrum.
- It underscores the importance of considering genetic diagnoses even with incomplete classic features.
- Further research may elucidate the genetic or environmental factors influencing phenotypic variability in PLS.
More Related Videos
08:22A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations
Published on: December 1, 2017
08:22A Robust Polymerase Chain Reaction-based Assay for Quantifying Cytosine-guanine-guanine Trinucleotide Repeats in Fragile X Mental Retardation-1 Gene
Published on: September 16, 2019
Related Concept Videos
Pleiotropy
Lethal Alleles
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Incomplete Dominance
Genomic Imprinting and Inheritance
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Alternative RNA Splicing
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
Pedigree Analysis