Neoadjuvant chemotherapy or upfront surgery in hepatoblastoma: A
multicenter retrospective study
Abstract
Background: We aimed to retrospectively investigate the role of
neoadjuvant chemotherapy in low-risk patients with hepatoblastoma (HB)
who underwent curative resection between February 2009 and December
2017. We also verified the feasibility of the risk stratification system
to select the optimal patients for upfront resection.
Procedure: We compared 5-year overall survival (OS) and
event-free survival (EFS) between the upfront surgery (US) (n=26) and
neoadjuvant chemotherapy (NC) (n=104) groups at three oncology centers
in Beijing, China. To reduce the effect of covariate imbalances,
propensity score matching (PSM) was used. We explored whether
preoperative chemotherapy affected surgical outcomes and identified the
risk factors for events and death, including resection margin status,
PRETreatment EXTent of disease stages, age, sex, pathology
classification, and α-fetoprotein levels. Results: The median
follow-up period was 64 months (interquartile range 60–72). After PSM,
22 pairs of patients were identified and the patient characteristics
were similar for all variables included in propensity score matching. In
the US group, the 5-year EFS and OS rates were 81.8% and 86.3%,
respectively. In the NC group, 5-year EFS and OS rates were 81.8% and
90.9%, respectively. No significant differences in EFS or OS were
observed between the groups. Pathological classification was the only
risk factor for death and disease progression, tumor recurrence,
diagnosis of other malignant neoplasms, and death from any cause (
p=0.007 and p=0.032, respectively). Conclusion:
Upfront resection can achieve long-term disease control in low-risk
patients with resectable HB, thus reducing the cumulative toxicity of
platinum-based chemotherapy drugs.