The heat shock protein DNAJB2 as a novel biomarker for essential thrombocythemia diagnosis associated with immune infiltration

•DNAJB2 is a potential biomarker for the diagnosis of essential thrombocythemia with high effectiveness;•The expression of DNAJB2 in bone marrow is positively correlated with predicted CD8+ T cell number in essential thrombocythemia;•This study provides new insights into predicting essential thrombocythemia with accuracy and promptness by gene biomarker detection.