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Updated: Aug 16, 2026
Generation and Expansion of Primary, Malignant Pleural Mesothelioma Tumor Lines
Published on: April 21, 2022
Case report: malignant peritoneal mesothelioma in two siblings
Amy H Picklesimer1, Vanna Zanagnolo, Theodore H Niemann
1Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, NC 27514, USA.
Background:
Mesothelioma is a rare tumor, linked with occupational asbestos exposure. This association has been used to explain clustering of cases within families. Newer evidence, however, supports a possible genetic predisposition for this tumor.
Case:
Our patient's brother was diagnosed with advanced stage malignant peritoneal mesothelioma in August 1995 at age of 42, he underwent tumor-reductive surgery followed by chemotherapy. He underwent a repeat cytoreductive surgery in September 1996 and further chemotherapy. He died of disease in December 1996. Our patient underwent cytoreductive surgery in May 1999 at age of 49 for advanced stage malignant peritoneal mesothelioma with suboptimal debulking. She received multiple chemotherapy regimens, including most recently experimental targeted agents, for slow progressing disease. She is presently alive with clinical disease 6 years from diagnosis.
Conclusion:
This is the first report of two siblings of different gender with malignant peritoneal mesothelioma and only average environmental asbestos exposure. It is highly likely that the family described in this case report has some form of inherited susceptibility to malignancy cancer gene, HLA type, or tumor suppressor gene mutation.
Insights
This study reports on two siblings with malignant peritoneal mesothelioma and average asbestos exposure, suggesting a potential inherited susceptibility to cancer. Further research into genetic factors is warranted.
Area of Science:
- Oncology
- Genetics
- Epidemiology
Background:
- Mesothelioma is a rare cancer primarily linked to asbestos exposure.
- While occupational exposure explains many cases, familial clustering suggests a possible genetic predisposition.
- This study investigates a family with multiple mesothelioma diagnoses.
Observation:
- A brother and sister were diagnosed with advanced malignant peritoneal mesothelioma.
- Both siblings had only average environmental asbestos exposure.
- The patient's brother died of the disease, while the patient is alive with progressive disease.
Findings:
- This is the first reported instance of malignant peritoneal mesothelioma in siblings of different genders with minimal asbestos exposure.
- The familial occurrence strongly suggests an inherited susceptibility to cancer.
- Potential genetic factors include cancer susceptibility genes, HLA types, or tumor suppressor gene mutations.
Implications:
- This case highlights the importance of considering genetic predisposition in mesothelioma etiology.
- Further investigation into inherited cancer syndromes may reveal novel diagnostic and therapeutic targets.
- Understanding genetic factors can improve risk assessment and personalized treatment strategies for mesothelioma patients.
