Hermansky-Pudlak syndrome. Overview of clinical and molecular features and case report of a new HPS-1 variant.

Abstract:

:Hermansky-Pudlak syndrome (HPS) is a rare, autosomal recessive disorder affecting lysosome-related organelles (LRO), including dense platelet granules. HPS causes oculocutaneous hypopigmentation, bleeding diathesis and granulomatous colitis or pulmonary fibrosis. To date, there is no curative treatment and the clinical management depends on the severity of symptoms. A prompt diagnosis of HPS patients could improve their quality of life and clinical management. However, the absence of a specific platelet function test, the wide molecular heterogeneity, and the lack of phenotype-genotype correlations hamper the rapid diagnosis. Nine subtypes of HPS have been identified as a result of mutations in nine genes that codify for proteins involved in formation and shuttle of the LRO. The molecular characterization of patients and knowledge derived from animal models of HPS contribute to the understanding of biogenesis and function of the LRO. This paper describes a patient with a novel homozygous nonsense mutation causing HPS and provides a review of the literature focusing on recent advances in the molecular characterization and physiopathology of HPS.

journal_name

Hamostaseologie

journal_title

Hamostaseologie

authors

Sánchez-Guiu I,Torregrosa JM,Velasco F,Antón AI,Lozano ML,Vicente V,Rivera J

doi

10.5482/HAMO-14-06-0024

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

301-9

issue

4

eissn

0720-9355

issn

2567-5761

pii

14-06-0024

journal_volume

34

pub_type

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