TY - JOUR
T1 - The erbB2+ cluster of the intrinsic gene set predicts tumor response of breast cancer patients receiving neoadjuvant chemotherapy with docetaxel, doxorubicin and cyclophosphamide within the GEPARTRIO trial
AU - Rody, A.
AU - Karn, T.
AU - Solbach, C.
AU - Gaetje, R.
AU - Munnes, M.
AU - Kissler, S.
AU - Ruckhäberle, E.
AU - Minckwitz, G. v.
AU - Loibl, S.
AU - Holtrich, U.
AU - Kaufmann, M.
N1 - Funding Information:
We thank Katherina Kourtis for expert technical assistance. This work was supported by grants from the Deutsche Krebshilfe, Bonn, the Margarete Bonifer-Stiftung, Bad Soden, the BANSS-Stiftung, Biedenkopf, and the Dr. Robert Pfleger-Stiftung, Bamberg.
PY - 2007/6
Y1 - 2007/6
N2 - Gene expression profiling using Affymetrix HG-U133 Arrays (22,500 genes) was performed on fresh frozen pretherapeutic core biopsies from 50 patients undergoing neoadjuvant chemotherapy (NAC) with docetaxel, adriamycin, cyclophosphamide (TAC) within the GEPARTRIO trial. The Sorlie classification based on the "intrinsic gene set" revealed four different subgroups in our cohort (normal-like: 14%, basal-like: 20%, erbB2+: 22% and luminal: 44%), which is in line with the original description. High genomic grade but not histopathological grading was statistically different within the four subgroups (P<0.001). About 45.5% of tumors classified according to erbB2+ cluster showed a pathological complete response compared to 0% in the normal-like, 10.0% in the basal-like and 9.1% in the luminal subgroup (P=0.024). There was a trend to less tumor relapses in the erbB2+ subgroup (0%) compared to the normal-like (28.6%), basal-like (30.0%) and luminal (13.6%) cluster (P=0.215). Our data suggest that the molecular tumor subtypes based on the "intrinsic gene set" can be used to predict tumor response according to NAC.
AB - Gene expression profiling using Affymetrix HG-U133 Arrays (22,500 genes) was performed on fresh frozen pretherapeutic core biopsies from 50 patients undergoing neoadjuvant chemotherapy (NAC) with docetaxel, adriamycin, cyclophosphamide (TAC) within the GEPARTRIO trial. The Sorlie classification based on the "intrinsic gene set" revealed four different subgroups in our cohort (normal-like: 14%, basal-like: 20%, erbB2+: 22% and luminal: 44%), which is in line with the original description. High genomic grade but not histopathological grading was statistically different within the four subgroups (P<0.001). About 45.5% of tumors classified according to erbB2+ cluster showed a pathological complete response compared to 0% in the normal-like, 10.0% in the basal-like and 9.1% in the luminal subgroup (P=0.024). There was a trend to less tumor relapses in the erbB2+ subgroup (0%) compared to the normal-like (28.6%), basal-like (30.0%) and luminal (13.6%) cluster (P=0.215). Our data suggest that the molecular tumor subtypes based on the "intrinsic gene set" can be used to predict tumor response according to NAC.
UR - http://www.scopus.com/inward/record.url?scp=34249050827&partnerID=8YFLogxK
U2 - 10.1016/j.breast.2007.02.006
DO - 10.1016/j.breast.2007.02.006
M3 - Journal articles
C2 - 17449250
AN - SCOPUS:34249050827
SN - 0960-9776
VL - 16
SP - 235
EP - 240
JO - Breast
JF - Breast
IS - 3
ER -
