Minireviews
Copyright ©2014 Baishideng Publishing Group Co.
World J Gastroenterol. Mar 14, 2014; 20(10): 2634-2640
Published online Mar 14, 2014. doi: 10.3748/wjg.v20.i10.2634
Table 1 Frequency of hyperplastic polyps subtypes n (%)
AuthorPopulationHPs, nMVHPGCHPMPHP
Kim et al[24]South Korea4530 (66.7)11 (24.4)4 (8.9)
Carr et al[18]Australia3634 (94.4)2 (5.6)0 (0.0)
Spring et al[27]Australia12054 (45.0)66 (55.0)0 (0.0)
Table 2 Description of molecular alterations reported in serrated lesions
Ref.PopulationMolecularalterationsSerrated polyp
Carcinoma
HP
SSATSAMPSerrated ADC
MVHPGCHPMPHP
Kim et al[24]South KoreaKRAS16.7%72.7%25.0%12.5%NANANA
BRAF66.7%0.0%25.0%60.7%NANANA
MSI-HNANANA1.8%NANANA
CIMP positive73.3%18.2%75.0%76.8%NANANA
Sandmeier et al[30]SwitzerlandKRAS17.0%25.0%NANANA
BRAF83.0%63.0%NANANA
MSI-H0.0%0.0%NANANA
CIMP positiveNANANANANA
Kim et al[10]United StatesKRAS6.0%8.0%NA8.0%17.0%25.0%NA
BRAF88.0%75.0%NA81.0%76.0%75.0%NA
MSI-H0.0%0.0%NA0.0%3.0%0.0%NA
CIMP positive41.%%8.0%NA44.0%43.0%50.0%NA
O´Brien et al[40]United StatesKRAS13.2%42.9%NA6.9%NANA0.0%
BRAF76.3%21.4%NA82.9%NANA82.0%
MSI-H0.0%0.0%NA0.0%NANA81.8%
CIMP positive47.4%14.3%NA75.9%NANA90.0%
Spring et al[27]AustraliaKRAS11.0%50.0%NA8.0%0.0%43.0%NA
BRAF70.0%20.0%NA78.0%66.0%57.0%NA
MSI-HNANANANANANANA
CIMP positiveNANANANANANANA
Konishi et al[34]JapanKRAS13.0%8.0%NA22.7%NA
BRAFNA32.0%NA40.9%NA
MSI-H8.0%36.0%NA5.0%NA
CIMP positiveNANANANANA
Yang et al[33]United StatesKRAS13.2%46.2%NA7.1%28.0%NANA
BRAF76.3%23.1%NA82.1%60.0%NANA
MSI-HNANANANANANANA
CIMP positive47.4%15.4%NA75.0%80.0%NANA