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Jackie07 · 06-28-2011, 06:32 AM

Cancer Res. 2011 Mar 1;71(5):1515-9. Epub 2011 Feb 22.
p95HER2 and breast cancer.

Arribas J, Baselga J, Pedersen K, Parra-Palau JL.
Source

Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain. jarribas@vhio.net

Abstract

A subtype of HER2-positive tumors with distinct biological and clinical features expresses a series of carboxy-terminal fragments collectively known as p95HER2. One of these fragments, named 100- to 115-kDa p95HER2 or 611-CTF, is hyperactive because of its ability to form homodimers maintained by intermolecular disulfide bonds.

Despite lacking the majority of the extracellular domain, this HER2 fragment drives breast cancer progression in vivo. The recent availability of specific anti-p95 antibodies has confirmed previous results indicating that the expression of p95HER2 is predictive of poor prognosis and correlates with resistance to the treatment with trastuzumab, a therapeutic antibody directed against the extracellular domain of HER2.

ps. Another link listing drugs targeting this expression - not sure if they are in the market yet:
http://www.biocompare.com/ProductLis...557157&sb=true

06-28-2011, 06:32 AM	#4
Jackie07 Senior Member Join Date: Jan 2008 Location: "Love never fails." Posts: 5,809	Re: p95Her2 a (nasty) subgroup of her2 Cancer Res. 2011 Mar 1;71(5):1515-9. Epub 2011 Feb 22. p95HER2 and breast cancer. Arribas J, Baselga J, Pedersen K, Parra-Palau JL. Source Vall d'Hebron Institute of Oncology (VHIO), Barcelona, Spain. jarribas@vhio.net Abstract A subtype of HER2-positive tumors with distinct biological and clinical features expresses a series of carboxy-terminal fragments collectively known as p95HER2. One of these fragments, named 100- to 115-kDa p95HER2 or 611-CTF, is hyperactive because of its ability to form homodimers maintained by intermolecular disulfide bonds. Despite lacking the majority of the extracellular domain, this HER2 fragment drives breast cancer progression in vivo. The recent availability of specific anti-p95 antibodies has confirmed previous results indicating that the expression of p95HER2 is predictive of poor prognosis and correlates with resistance to the treatment with trastuzumab, a therapeutic antibody directed against the extracellular domain of HER2. ps. Another link listing drugs targeting this expression - not sure if they are in the market yet: http://www.biocompare.com/ProductLis...557157&sb=true __________________ Jackie07 http://www.kevinmd.com/blog/2011/06/doctors-letter-patient-newly-diagnosed-cancer.html http://www.asco.org/ASCOv2/MultiMedi...=114&trackID=2 NICU 4.4 LB Erythema Nodosum 85 Life-long Central Neurocytoma 4x5x6.5 cm 23 hrs 62090 semi-coma 10 d PT OT ST 30 d 3 Infertility tmts 99 > 3 u. fibroids > Pills CN 3 GKRS 52301 IDC 1.2 cm Her2 +++ ER 5% R. Lmptmy SLNB+1 71703 6 FEC 33 R Tamoxifen Recc IIB 2.5 cm Bi-L Mast 61407 2/9 nds PET 6 TCH Cellulitis - Lymphedema - compression sleeve & glove H w x 4 MUGA 51 D, J 49 M Diastasis recti Tamoxifen B. scan Irrtbl bowel 1'09 Colonoscopy 313 BRCA1 V1247I hptc hemangioma Vertigo GI - > yogurt hysterectomy/oophorectomy 011410 Exemestane 25 mg tab 102912 ~ 101016 stopped due to r. hip/l.thigh pain after long walk DEXA 1/13 1-2016 lesions in liver largest 9mm & 1.3 cm onco. says not cancer. 3-11 Appendectomy - visually O.K., a lot of puss. Final path result - not cancer. Start Vitamin D3 and Calcium supplement （600mg x2) 10-10 Stopped Exemestane due to r. hip/l.thigh pain OKed by Onco 11-08-2016 7-23-2018 9 mm groundglass nodule within the right lower lobe with indolent behavior. Due to possible adenocarcinoma, Recommend annual surveilence. 7-10-2019 CT to check lung nodule. 1-10-2020 8mm stable nodule on R Lung, two 6mm new ones on L Lung, a possible lymph node involvement in inter fissule. "I WANT TO BE AN OUTRAGEOUS OLD WOMAN WHO NEVER GETS CALLED AN OLD LADY. I WANT TO GET SHARP EDGED & EARTH COLORED, TILL I FADE AWAY FROM PURE JOY." Irene from Tampa Advocacy is a passion .. not a pastime - Joe Last edited by Jackie07; 06-28-2011 at 06:39 AM..