Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\25800101
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Cancer+Sci
2015 ; 106
(3
): 324-7
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Japanese Society of Medical Oncology Clinical Guidelines: RAS (KRAS/NRAS)
mutation testing in colorectal cancer patients
#MMPMID25800101
Taniguchi H
; Yamazaki K
; Yoshino T
; Muro K
; Yatabe Y
; Watanabe T
; Ebi H
; Ochiai A
; Baba E
; Tsuchihara K
Cancer Sci
2015[Mar]; 106
(3
): 324-7
PMID25800101
show ga
The Japanese guidelines for the testing of KRAS mutations in colorectal cancer
have been used for the past 5 years. However, new findings of RAS (KRAS/NRAS)
mutations that can further predict the therapeutic effects of anti-epidermal
growth factor receptor (EGFR) antibody therapy necessitated a revision of the
guidelines. The revised guidelines included the following five basic requirements
for RAS mutation testing to highlight a patient group in which anti-EGFR antibody
therapy may be ineffective: First, anti-EGFR antibody therapy may not offer
survival benefit and/or tumor shrinkage to patients with expanded RAS mutations.
Thus, current methods to detect KRAS exon 2 (codons 12 and 13) mutations are
insufficient for selecting appropriate candidates for this therapy. Additional
testing of extended KRAS/NRAS mutations is recommended. Second, repeated tests
are not required for the detection; tissue materials of either primary or
metastatic lesions are applicable for RAS mutation testing. Evaluating RAS
mutations prior to anti-EGFR antibody therapy is recommended. Third, direct
sequencing with manual dissection or allele-specific PCR-based methods is
currently applicable for RAS mutation testing. Fourth, thinly sliced sections of
formalin-fixed, paraffin-embedded tissue blocks are applicable for RAS mutation
testing. One section stained with H&E should be provided to histologically
determine whether the tissue contains sufficient amount of tumor cells for
testing. Finally, RAS mutation testing must be performed in laboratories with
appropriate testing procedures and specimen management practices.
|Antibodies, Monoclonal, Humanized/therapeutic use
[MESH]
|Antibodies, Monoclonal/immunology/therapeutic use
[MESH]