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Old 07-17-2022, 08:33 PM   #1
Colleen
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Join Date: Jun 2014
Location: Monarch Beach, CA
Posts: 88
Biosimilar for Herceptin

It’s been awhile since I have been on here to post. I am curious if anyone has been switched to a biosimilar for herceptin and if they have had any side affects that they did not have with Genentech’s herceptin.
__________________
*October 2013 mammogram suspicious lump right breast
*Oct. 2013 Breast MRI reveals 2.5 cm tumor right breast 6-7 nodes positive
*Nov 2, 2013 PET/CT tumor right breast, 6-7 nodes include right axilla and one above clavicle, 3.5 cm lesion on dome of liver
*Nov 4, 2013 meet oncologist: schedule port placement
*Nov 5, 2013 baseline echo 65%
*Nov 13, 2013 start THP six cycles every 21 days
*Nov 20, 2013 blood counts now coming back quickly start neulasta following next treatment, no pain and it worked!
*Jan 19, 2014 syncope, ambulance ride to hospital, cracked a tooth and chipped three, six stitches in chin, CT scan shows brain is ok but am required to follow up with neurologist.
*Jan 28, 2014 PET/CT shows great response to THP
*Jan 28, 2013 echo, all is good 60-65%
*Feb 2014 brain MRI, no missing parts and no extra parts, all clear
*Feb 27, 2014 last treatment with taxotere
*Apr 22, 2014 PET/CT shows complete pathological response to THP amen!
*Apr 22, 2013 echo 60%
*continue vitamin H and P every 21 days until...eternity?
*May 2014 emotional melt down, demand port be removed.
*May 22 2014, biopsy of original tumor rt. breast, no cancer cells in 8 tissue samples, amen
*June 2, 2014 Port removed, happy dance! Just couldn't tolerate the port any longer; it never worked properly and was extremely uncomfortable
*July 24, 2014 echo 60%
*August 28, 2014 PET/CT all clear NED
*Oct 29, 2014 echo 65%
*Feb 4, 2015 PET/CT NED!!!
*Feb 4, 2015 Echo 65-70%
*May 19, 2015 mammogram all clear
*May 19, 2015 Brain MRI all clear!
*August 18, 2015 PET/CT NED!!! amen!
*March 8, 2016 CT w/contrast NED
*March 10, 2016 Echo normal
*June 2016 Echo normal
*September 7, 2016 CT scan w/contrast NED
*September 8, 2016 Echo normal
* still receiving infusions every 21 days of Perjeta and Herceptin with no end in sight......
*March 2017 CT scan NED and echo normal
*May 2017 mammogram all clear!
*November 2017 CT scan NED and echo normal
*May 2018 echo normal
*December 2018 ct scan with contrast and nasty drink-all clear!


"Better pass boldly into that other world, in the full glory of some passion, than fade and wither dismally with age."
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Old 07-22-2022, 07:51 AM   #2
Nguyen
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Join Date: Nov 2005
Posts: 531
Re: Biosimilar for Herceptin

My wife has been on two herceptin/trastuzumab biosimilar for several years, they seem to be the same.

Real-World Clinical Outcomes of Biosimilar Trastuzumab (CT-P6) in HER2-Positive Early-Stage and Metastatic Breast Cancer

https://www.frontiersin.org/articles...21.689587/full
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