Abstract
Inherited platelet disorders (IPDs) are a heterogeneous group of conditions that present significant challenges in diagnosis and management. Here, we report two cases of patients presenting with clinically significant bleeding but with unclear etiologies by conventional clinical laboratory testing. Further evaluation, utilizing a combination of high-dimensional multiplexed mass cytometry and genetic sequencing, revealed the underlying causes of bleeding in both cases, leading to definitive diagnoses. These cases underscore the potential utility of combined multimodal approaches in evaluating patients with bleeding disorders. Moreover, these high-parameter methods can offer substantial mechanistic insights and can enhance our understanding of the molecular pathogenesis of IPDs. Future studies involving larger patient cohorts are needed to further validate this strategy, directly comparing its diagnostic yield and accuracy with current clinical laboratory testing approaches, which can ultimately improve patient care.
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