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In Vitro Ubiquitination and Deubiquitination Assays of Nucleosomal Histones
Published on: July 25, 2019
BAP1 GERMLINE MUTATION WITH IRIDOCILIOCHOROIDAL MELANOMA AND MALIGNANT PERITONEAL MESOTHELIOMA
Antonio Yaghy1, Li-Anne Lim, Arman Mashayekhi
1Ocular Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania.
Purpose:
BAP1 germline mutation can promote risk of uveal melanoma and mesothelioma. In this study, we report a patient with BAP1 germline mutation and uveal melanoma who developed a rare form of mesothelioma in the peritoneum.
Method:
Case report.
Results:
A 55-year-old white man noted blurred vision in the left eye. Examination revealed superotemporal episcleral sentinel vessels and a dark brown iris mass suspicious for melanoma, with angle invasion and involvement of the ciliochoroidal region. The tumor measured 14 mm in diameter and 10.3 mm in thickness. A diagnosis of iridociliochoroidal melanoma was rendered and plaque radiotherapy applied. Genetic testing revealed BAP1 germline mutation. At 3.5-year follow-up, tumor control was achieved, but radiation-related complications led to enucleation. At 5.5-year follow-up, incidental findings by laparoscopy revealed multiple peritoneal tumors, histopathologically proven to be malignant peritoneal mesothelioma. Lung evaluation was normal, and there was no melanoma-related or mesothelioma-related metastasis. Likewise, magnetic resonance imaging of the abdomen showed no evidence of hepatic metastasis.
Conclusion:
BAP1 tumor predisposition syndrome can promote risk of uveal melanoma and malignant peritoneal mesothelioma. Cancer screening for these malignancies is warranted.
Insights
Germline mutations in BAP1 (BRCA1-associated protein 1) increase the risk of uveal melanoma and malignant peritoneal mesothelioma. This case report highlights the importance of cancer screening for these conditions.
Area of Science:
- Oncology
- Genetics
- Ophthalmology
Background:
- Germline mutations in the BAP1 gene are associated with an increased risk of certain cancers.
- Uveal melanoma is a rare but aggressive form of eye cancer.
- Mesothelioma is a cancer that affects the lining of the chest or abdomen.
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