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. 2021 Dec 4;12(12):1951.
doi: 10.3390/genes12121951.

NGS Evaluation of a Bernese Cohort of Unexplained Erythrocytosis Patients

Katarzyna Aleksandra Jalowiec  1 , Kristina Vrotniakaite-Bajerciene  1 , Annina Capraru  1 , Tatiana Wojtovicova  1 , Raphael Joncourt  1 , Alicia Rovó  1 , Naomi A Porret  1
Affiliations

NGS Evaluation of a Bernese Cohort of Unexplained Erythrocytosis Patients

Katarzyna Aleksandra Jalowiec et al. Genes (Basel). .

Abstract

(1) Background: Clinical and molecular data on patients with unexplained erythrocyto-sis is sparse. We aimed to analyze the clinical and molecular features of patients with congenital erythrocytosis in our tertiary reference center. (2) Methods: In 34 patients with unexplained erythrocytosis, a 13-gene Next-Generation Sequencing erythrocytosis panel developed at our center was conducted. (3) Results: In 6/34 (18%) patients, eight different heterozygous gene variants were found. These patients were, therefore, diagnosed with congenital erythrocytosis. Two patients had two different gene variants each. All variants were characterized as variants of unknown significance as they had not previously been described in the literature. The rest of the patients (28/34, 82%) had no detected gene variants. (4) Conclusions: Our experience shows that the NGS panel can be helpful in determining the reasons for persistent, unexplained erythrocytosis. In our cohort of patients with erythrocytosis, we identified some, thus far unknown, gene variants which may explain the clinical picture. However, further investigations are needed to determine the relationship between the molecular findings and the phenotype.

Keywords: NGS; erythrocytosis; polycythemia.

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Conflict of interest statement

The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.

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