Mutations Involved in Premature-Ageing Syndromes

Area of Science:

• Genetics
• Molecular Biology
• Cellular Biology

Background:

• Premature-ageing syndromes are rare genetic disorders characterized by accelerated aging features.
• These conditions arise from mutations impacting nuclear lamina, DNA repair, genome stability, and mitochondrial function.
• Hutchinson-Gilford progeria syndrome (HGPS) and Werner syndrome (WS) are well-known examples, representing childhood and adulthood progeria, respectively.

Purpose of the Study:

• To provide an updated overview of genetic mutations causing HGPS, WS, and related laminopathies.
• To describe the spectrum of premature-aging laminopathies, from congenital restrictive dermopathy (RD) to adult-onset atypical WS.
• To highlight the genetic heterogeneity and shared pathological pathways in these syndromes.

Main Methods:

• Review of current literature on genetic mutations in premature-aging syndromes.
• Analysis of clinical features and genetic underpinnings of various laminopathies and related disorders.
• Emphasis on the role of next-generation sequencing for diagnosis.

Main Results:

• Identified mutations in genes critical for nuclear lamina, DNA repair, and mitochondrial function lead to diverse progeroid syndromes.
• Detailed the spectrum of laminopathies including RD, HGPS, mandibuloacral dysplasia (MAD), Néstor-Guillermo progeria syndrome (NGPS), and atypical WS.
• Highlighted overlapping symptoms across syndromes due to genetic heterogeneity and common cellular pathways.

Conclusions:

• Accurate clinical and molecular diagnosis of premature-aging syndromes requires expert evaluation in specialized centers.
• Next-generation sequencing of relevant gene panels is essential for early and precise diagnosis.
• Understanding the genetic basis and shared pathways is key for effective patient management.