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Relationship between response to lusutrombopag and splenic volume
Haruki Uojima1, Yoshitaka Arase2, Norio Itokawa3
1Department of Gastroenterology, Shonan Kamakura General Hospital, Kamakura 247-8533, Japan.
World Journal of Gastroenterology
|December 25, 2018
Summary
Splenic volume impacts lusutrombopag efficacy in chronic liver disease patients. Lower splenic volume correlated with increased platelet counts, suggesting it
Area of Science:
- Hepatology
- Hematology
- Pharmacology
Background:
- Chronic liver disease (CLD) frequently leads to thrombocytopenia, increasing bleeding risk.
- Lusutrombopag is a thrombopoietin receptor agonist used to increase platelet counts.
- Predictors of lusutrombopag response in CLD patients require further investigation.
Purpose of the Study:
- To evaluate the correlation between lusutrombopag efficacy and patient clinical characteristics.
- To identify factors influencing treatment response in thrombocytopenic CLD patients.
Main Methods:
- Retrospective, multicenter study of 50 thrombocytopenic CLD patients in Japan.
- Patients received oral lusutrombopag (3.0 mg/day for 7 days).
- Treatment response defined by specific platelet count increases post-administration.
Main Results:
- 80% of patients responded to lusutrombopag.
- Responders had significantly lower splenic volume and body weight compared to non-responders.
- Higher white blood cell count and hemoglobin levels were observed in responders.
- Multivariate analysis identified splenic volume as an independent predictor of response (OR=11.2, P=0.025).
- Splenic volume negatively correlated with changes in platelet count (r=-0.524, P=0.001).
Conclusions:
- Splenic volume is a key factor influencing platelet count changes after lusutrombopag administration in CLD patients.
- This finding may aid in predicting treatment outcomes and optimizing therapy.
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