| Autor: |
Pollock, Pamela M., Harper, Ursula L., Hansen, Katherine S., Yudt, Laura M., Stark, Mitchell, Robbins, Christiane M., Moses, Tracy Y., Hostetter, Galen, Wagner, Urs, Kakareka, John, Salem, Ghadi, Pohida, Tom, Heenan, Peter, Duray, Paul, Kallioniemi, Olli, Hayward, Nicholas K., Trent, Jeffrey M., Meltzer, Paul S. |
| Předmět: |
|
| Zdroj: |
Nature Genetics; Jan2003, Vol. 33 Issue 1, p19, 2p |
| Abstrakt: |
To evaluate the timing of mutations in BRAF (v-raf murine sarcoma viral oncogene homolog B1) during melanocytic neoplasia, we carried out mutation analysis on microdissected melanoma and nevi samples. We observed mutations resulting in the V599E amino-acid substitution in 41 of 60 (68%) melanoma metastases, 4 of 5 (80%) primary melanomas and, unexpectedly, in 63 of 77 (82%) nevi. These data suggest that mutational activation of the RAS/RAF/MAPK pathway in nevi is a critical step in the initiation of melanocytic neoplasia but alone is insufficient for melanoma tumorigenesis. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
