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Case-control study of perinatal factors and hepatoblastoma in children with an extremely low birthweight
K Maruyama1, H Ikeda, T Koizumi
1Department of Neonatology, Gunma Children's Medical Center, Seta-gun, Japan. maruken@gcmc.pref.gunma.jp
Insights
Oxygen therapy and furosemide treatment are significant risk factors for hepatoblastoma in extremely low birthweight infants. Longer oxygen therapy duration is the most critical predictor for developing this childhood cancer.
Area of Science:
- Pediatric Oncology
- Neonatology
- Cancer Risk Factors
Background:
- Hepatoblastoma shows a notable association with low birthweight.
- This case-control study investigated risk factors for hepatoblastoma in extremely low birthweight infants (< 1,000 g).
Purpose of the Study:
- To identify risk factors for hepatoblastoma in extremely low birthweight infants.
- To determine the most significant predictor for hepatoblastoma development in this vulnerable population.
Main Methods:
- A case-control study comparing 12 hepatoblastoma cases with 75 matched controls.
- Analysis of prenatal and postnatal histories, including parental data.
- Utilized univariate and multivariate Cox regression analyses.
Main Results:
- Infants with hepatoblastoma had lower gestational age and longer time to regain birthweight.
- Significantly longer durations of oxygen therapy and furosemide treatment were observed in hepatoblastoma cases.
- Multivariate analysis identified the duration of oxygen therapy as an independent risk factor (HR = 1.006, P = 0.001).
Conclusions:
- Oxygen therapy, furosemide treatment, and growth rate are risk factors for hepatoblastoma in extremely low birthweight infants.
- The duration of oxygen therapy is the primary predictor for hepatoblastoma development.
- Further research is needed to elucidate underlying causes and develop preventative strategies.
Background:
There is a significant association between hepatoblastoma and low birthweight. A case-control study was conducted to reveal risk factors for hepatoblastoma in children of extremely low birthweight (< 1,000 g).
Methods:
Prenatal and postnatal histories, including parental histories, of 12 hepatoblastoma cases and 75 birthweight-matched controls were compared.
Results:
The gestational age of the hepatoblastoma cases (23-32 weeks: median 25 weeks), tended to be lower than that of the controls (23-36 weeks; median, 27 weeks; P = 0.072). The time for an infant's bodyweight to return to the same level as the birthweight also tended to be longer in hepatoblastoma cases than in controls (P = 0.055). All hepatoblastoma cases received oxygen therapy for a period of 4-508 days (median 114 days), which was significantly longer than the 0-366 days (median 62 days) in the controls (P = 0.022). Furosemide was given to all hepatoblastoma cases and was used for a significantly longer period in these infants (6460 days; median 89 days) than in the controls (0-241 days; median 44 days P = 0.027). A univariate Cox regression demonstrated that the time taken to regain bodyweight at birth and the duration of both oxygen therapy and furosemide treatment were significantly associated with the development of hepatoblastoma (hazard ratio (HR)= 1.044, P= 0.013; HR = 1.006, P= 0.001; and HR = 1.007, P= 0.001, respectively). Although there were significant correlations between the factors, a multivariate Cox regression analysis identified the duration of oxygen therapy as a significant independent risk factor (HR = 1.006, P = 0.001).
Conclusions:
Oxygen therapy and furosemide treatment, along with the rate of growth, are risk factors for the development of hepatoblastoma in children of extremely low birthweight, and the duration of oxygen therapy is the most important factor in predicting the development of hepatoblastoma. Further studies are necessary to determine the real reasons for the development of hepatoblastoma and to protect children of low birthweight from the development of cancer.
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