Dr Sean Altekruse and colleagues from Maryland, USA described Surveillance, Epidemiology and End Results (SEER) hepatocellular carcinoma (HCC) incidence trends and the US liver cancer mortality trends by geography, age, race/ethnicity, and gender.
HCC incidence data from SEER 18 registries and liver cancer mortality data from the National Center for Health Statistics were analyzed.
Rates and joinpoint trends were calculated by demographic subgroup.
State-level liver cancer mortality rates and trends were mapped.
The research team found that HCC incidence rates in SEER registries did not significantly increase during 2007–2010.
However, the team noted that US liver cancer mortality rates did increase.
|Increasing mortality rates among women were restricted to whites aged 50+ years|
|American Journal of Gastroenterology|
HCC incidence and liver cancer mortality rates increased among black, Hispanic, and white men aged 50+ years, and decreased among 35–49-year-old men in all racial/ethnic groups including Asians/Pacific Islanders.
The team observed that significantly increasing incidence and mortality rates among women were restricted to blacks, Hispanics, and whites aged 50+ years.
Asian/Pacific Islander liver cancer mortality rates decreased during 2000–2010 with decreasing rates among women aged 50–64 years, men aged 35–49 years, and stable rates in other groups.
During 2006–2010, among individuals 50–64 years of age, blacks and Hispanics had higher incidence and mortality rates than Asians/Pacific Islanders.
The researchers noted that liver cancer mortality rates were highest in Louisiana, Mississippi, Texas, and Washington, DC.
Dr Altekruse's team concludes, "Decreasing HCC incidence and liver cancer mortality rates among Asians/Pacific Islanders, men aged 35–49 years, and the nonsignificant increase in overall HCC incidence rates suggest that the peak of the epidemic may be near or have passed."
"Findings of geographic variation in mortality rates can inform control efforts."