Massachusetts General Hospital and Cancer Center, Boston, MA
Surendra Pal Chaudhary , Lipika Goyal , Matthew L Chase , Andrew X. Zhu , Nikroo Hashemi , Stephanie Reyes , Kathleen E Corey , Joseph Misdraji , Jeffrey William Clark
Background: NAFLD associated HCC is rapidly increasing in frequency worldwide. In this study, we evaluated potential differences in clinical characteristics and outcomes of patients who underwent surgery or liver transplant for NAFLD-associated HCC compared to HCC from other etiologies. Methods: Demographic, clinicopathological features and outcomes of patients with HCC who underwent liver resection or liver transplant at Massachusetts General Hospital and Brigham and Women’s Hospital were collected (January 2004 - April 2018). Of 713 patients screened, 481were eligible: 260 underwent resection [NAFLD (n = 61), viral (n = 150), cryptogenic (CC) (n = 49)]. 221 underwent transplant [(NAFLD (n = 14), viral (n = 201), CC (n = 6)]. Results: In the Resected cohort, NAFLD patients presented with median age of (71.5 years) compared with Viral (63.4) and Cryptogenic (68.4). NAFLD patients had significantly higher Body Mass Index (BMI) > 28.8 39(66%) p = < 0.001, while patients with cryptogenic HCC presented with large tumor size (>5cm) 37(75%) p = 0.001. In multivariate analysis, tumor size 5cm (HR1.78,p = 0.002), R1 or R2 resection (HR 2.48, p = < 0.001and 2.8,p = 0.007), low platelet count (HR 2.8,p = 0.002) and diabetes (HR 1.5,p = 0.025) were poor prognostic factors in resection cohort. Median overall survival (OS) was not significantly different between NAFLD, Cryptogenic and Viral (47.2, 69.7 and 69.0 months, p = 0.18) etiologies, respectively. In the Transplant cohort, NAFLD patients had a median age of 65.5 and cryptogenic, viral (61.3 and 58.5 years) respectively. NAFLD and Cryptogenic HCC patients compared with viral HCC patients had low AFP median 3.7, 3.9 and 7.5 ng/mL(p = 0.012) respectively. In multivariate analysis patients with perineural invasion (HR 20.7,p = 0.009), disease recurrence (HR 2.5,p = 0.001) and high AFP (HR 2.1,p = 0.001) were at higher risk of death among transplant patients. No significant difference in median OS was seen between NAFLD, cryptogenic and viral (69.1,92.3 and 88.0 months, p = 0.38). Conclusions: NAFLD patients had higher BMI and had a lower AFP than viral and CC. NAFLD had similar median OS following resection and transplant when compared to those with Viral and CC.
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