Abstract
Currently, uveal melanoma is not considered within the Lynch syndrome tumor spectrum. However, there are studies suggesting a contribution of microsatellite instability in sporadic uveal melanoma tumorigenesis. We report a 45-year-old woman who was referred for genetic counseling due to a family history of Lynch syndrome caused by a MLH1 mutation. She originally underwent enucleation of the right eye secondary to a uveal spindle cell melanoma diagnosed at age 25. The tumor recurred 22 years later presenting as an ovarian metastasis and concurrently a microscopic endometrial endometrioid carcinoma, grade 1/3 was diagnosed. Subsequent studies highlighted that the uveal melanoma showed high microsatellite instability and loss of MLH1 and PMS2 protein expression, with no MLH1 promoter methylation or BRAF mutation. Additionally, a GNAQ mutation was found. We conclude that our patient’s uveal melanoma is most likely related to MLH1 germline mutation and thus Lynch syndrome related. To the best of our knowledge, this is the first report of uveal melanoma showing MLH1/PMS2 protein loss in the context of Lynch syndrome.
References
Richman S (2015) Deficient mismatch repair: read all about it (review). Int J Oncol 47:1189–1202
Watson P, Riley B (2005) The tumor spectrum in the Lynch syndrome. Familial Cancer 4:245–248
Karamurzin Y, Zeng Z, Stadler ZK et al (2012) Unusual DNA mismatch repair-deficient tumors in Lynch syndrome: a report of new cases and review of the literature. Hum Pathol 43:1677–1687
Ponti G, Losi L, Pellacani G et al (2008) Malignant melanoma in patients with hereditary nonpolyposis colorectal cancer. The British journal of dermatology 159:162–168
Hussein MR, Haemel AK, Albert DM et al (2005) Microsatellite instability and alterations of mismatch repair protein expression in choroidal melanomas. Arch Ophthalmol 123:1705–1711
Boland CR, Thibodeau SN, Hamilton SR et al (1998) A National Cancer Institute Workshop on Microsatellite Instability for cancer detection and familial predisposition: development of international criteria for the determination of microsatellite instability in colorectal cancer. Cancer Res 58:5248–5257
Mancini I, Santucci C, Sestini R et al (2010) The use of COLD-PCR and high-resolution melting analysis improves the limit of detection of KRAS and BRAF mutations in colorectal cancer. The Journal of molecular diagnostics: JMD 12:705–711
Van Raamsdonk CD, Griewank KG, Crosby MB et al (2010) Mutations in GNA11 in uveal melanoma. N Engl J Med 363:2191–2199
Jovanovic P, Mihajlovic M, Djordjevic-Jocic J et al (2013) Ocular melanoma: an overview of the current status. International journal of clinical and experimental pathology 6:1230–1244
Schoenfield L (2014) Uveal melanoma: a pathologist’s perspective and review of translational developments. Adv Anat Pathol 21:138–143
McCluggage WG, Bissonnette JP, Young RH (2006) Primary malignant melanoma of the ovary: a report of 9 definite or probable cases with emphasis on their morphologic diversity and mimicry of other primary and secondary ovarian neoplasms. International journal of gynecological pathology: official journal of the International Society of Gynecological Pathologists 25:321–329
Gupta D, Deavers MT, Silva EG et al (2004) Malignant melanoma involving the ovary: a clinicopathologic and immunohistochemical study of 23 cases. Am J Surg Pathol 28:771–780
Young RH, Scully RE (1991) Malignant melanoma metastatic to the ovary: a clinicopathologic analysis of 20 cases. Am J Surg Pathol 15:849–860
Mandato VD, Kobal B, Di Stefano A et al (2010) Choroidal melanoma metastasized to the ovary: case report and review of the literature. Eur J Gynaecol Oncol 31:109–113
Yu VP, Novelli M, Payne SJ et al (2009) Unusual presentation of Lynch syndrome. Hereditary cancer in clinical practice 7:12
Barrow E, Hill J, Evans DG (2013) Cancer risk in Lynch syndrome. Familial Cancer 12:229–240
Westin SN, Lacour RA, Urbauer DL et al (2008) Carcinoma of the lower uterine segment: a newly described association with Lynch syndrome. J Clin Oncol Off J Am Soc Clin Oncol 26:5965–5971
Yu X, Ambrosini G, Roszik J et al (2015) Genetic analysis of the ‘uveal melanoma’ C918 cell line reveals atypical BRAF and common KRAS mutations and single tandem repeat profile identical to the cutaneous melanoma C8161 cell line. Pigment cell & melanoma research 28:357–359
Alvino E, Marra G, Pagani E et al (2002) High-frequency microsatellite instability is associated with defective DNA mismatch repair in human melanoma. The Journal of investigative dermatology 118:79–86
Kim SJ, Kim HR, Kim SH et al (2014) hMLH1 promoter methylation and BRAF mutations in high-frequency microsatellite instability colorectal cancers not fulfilling the revised Bethesda guidelines. Annals of surgical treatment and research 87:123–130
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Funding
This study was supported by the IPO Porto Research Center (CI-IPOP) (Financiamento Base_GOG-n° 26 and Financiamento Base_GEBC-n° 27). MP is a research fellow with a grant from the Fundação para a Ciência e Tecnologia (FCT) (SFRH/BPD/113014/2015).
Conflict of interest
The authors declare that they have no conflict of interest.
Rights and permissions
About this article
Cite this article
Lobo, J., Pinto, C., Freitas, M. et al. Ovarian metastasis from uveal melanoma with MLH1/PMS2 protein loss in a patient with germline MLH1 mutated Lynch syndrome: consequence or coincidence?. Virchows Arch 470, 347–352 (2017). https://doi.org/10.1007/s00428-016-2052-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00428-016-2052-4