- Immunohistochemical and Molecular Characteristics of Follicular Patterned Thyroid Nodules with Incomplete Nuclear Features of Papillary Thyroid Carcinoma.
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Hye Sook Min, Gheeyoung Choe, Nam Yun Cho, Gyeong Hoon Kang, Seong Hoe Park, So Yeon Park
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Korean J Pathol. 2009;43(6):495-502.
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DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.6.495
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 Abstract
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- BACKGROUND
Follicular patterned thyroid nodules with incomplete nuclear features of papillary thyroid carcinoma (FTN-INPTCs) are difficult to diagnose, and their biological behavior and association with follicular variants of PTC (FVPTCs) have not yet been established. The aim of this study is to determine immunohistochemical and molecular characteristics of FTN-INPTCs. METHODS: We investigated immunohistochemical features (galectin-3, HBME-1, CK19, fibronectin-1, CITED1), BRAF V600E mutation and RASSF1A promoter methylation status in 30 FTN-INPTC cases, along with 26 FVPTCs, 21 follicular adenomas (FAs) and 14 nodular hyperplasias (NHs). RESULTS: Expression of galectin-3, HBME-1, CK19 and CITED1 was significantly higher in FTN-INPTCs than in FAs or NHs, but expression of galectin-3, CK19 and fibronectin-1 was lower in FTN-INPTCs than in FVPTCs. The BRAF V600E mutation was not detected in the benign nodules or FTN-INPTCs, whereas 57% of FVPTCs had the mutation. RASSF1A promoter methylation was higher in FTN-INPTCs than in benign nodules but there was no difference between FTN-INPTCs and FVPTCs. CONCLUSIONS: Our results represent the borderline immunohistochemical and molecular characteristics of FTN-INPTC. We conclude that FTN-INPTC is an intermediate lesion between a benign nodule and a FVPTC, and that it is pathogenetically related to FVPTC.
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Citations
Citations to this article as recorded by  - A Case of Multifocal Papillary Thyroid Carcinoma Consisting of One Encapsulated Follicular Variant withBRAFK601E Mutation and Three Conventional Types withBRAFV600E Mutation
Wook Youn Kim, Young Sin Ko, Tae Sook Hwang, Hye Seung Han, So Dug Lim, Wan Seop Kim, Seo Young Oh
Korean Journal of Pathology.2013; 47(3): 293. CrossRef - The Frequency ofBRAFMutation in Very Small Papillary Thyroid Carcinomas
Taeeun Kim, Ji-Hyun Roh, Hee-Jung Park, Jee Eun Kwon, So-Young Kang, Yoon-La Choi, Young Lyun Oh
The Korean Journal of Pathology.2010; 44(3): 308. CrossRef
- The Relationship between the Methylenetetrahydrofolate Reductase Genotypes and the Methylation Status of the CpG Island Loci, LINE-1 and Alu in Prostate Adenocarcinoma.
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Jung Ho Kim, Nam Yun Cho, Baek Hee Kim, Wook Youn Kim, Bo Sung Kim, Kyung Chul Moon, Gyeong Hoon Kang
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Korean J Pathol. 2009;43(1):26-35.
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DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.1.26
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4,263
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Abstract
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- BACKGROUND
Genetic polymorphism of methylenetetrahydrofolate reductase (MTHFR), in association with the influence of MTHFR upon DNA methylation, may cause differences of the methylation profile of cancer. Thus, we investigated the relationship between the methylation status of prostate adenocarcinoma and the genetic polymorphism of MTHFR.
METHODS
We examined 179 cases of prostate adenocarcinoma for determining the genotypes of MTHFR 677 and 1298, the methylation status of 16 CpG island loci and the methylation levels of the LINE-1 and Alu repeats with using polymerase chain reaction/restriction fragment length polymorphism, methylation-specific polymerase chain reaction and combined bisulphite restriction analysis, respectively.
RESULTS
There was a higher proportion of the CT genotype of MTHFR 677 in the prostate adenocarcinoma than that in the normal control. The TT genotype of MTHFR 677 showed the highest frequency of methylation in six out of nine major CpG island loci, and these were which were frequently hypermethylated in prostate adenocarcinoma. The CT type showed the lowest methylation levels of LINE-1 and Alu among the MTHFR 677 genotypes. Interestingly, the CC type of MTHFR 1298 demonstrated favorable prognostic factors.
CONCLUSIONS
Our study is the first to examine the methylation profile of prostate adenocarcinoma according to the MTHFR genotypes. The differences of the cancer risk, the genomic hypomethylation and the prognosis between the MTHFR genotypes in prostate adenocarcinoma should be further explored.
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Citations
Citations to this article as recorded by - Association Between MTHFR 1298A>C Polymorphism and Spontaneous Abortion with Fetal Chromosomal Aneuploidy
Shin Young Kim, So Yeon Park, Ji Won Choi, Do Jin Kim, Shin Yeong Lee, Ji Hyae Lim, Jung Yeol Han, Hyun Mee Ryu, Min Hyoung Kim
American Journal of Reproductive Immunology.2011; 66(4): 252. CrossRef - Distinctive patterns of age-dependent hypomethylation in interspersed repetitive sequences
Pornrutsami Jintaridth, Apiwat Mutirangura
Physiological Genomics.2010; 41(2): 194. CrossRef
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