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DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with AFRICURE PHARMA, ROW2TECH, NIPER-G, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India as ADVISOR, earlier assignment was with GLENMARK LIFE SCIENCES LTD, as CONSUlTANT, Retired from GLENMARK in Jan2022 Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 32 plus yrs, Prior to joining Glenmark, he has worked with major multinationals like Hoechst Marion Roussel, now Sanofi, Searle India Ltd, now RPG lifesciences, etc. He has worked with notable scientists like Dr K Nagarajan, Dr Ralph Stapel, Prof S Seshadri, etc, He did custom synthesis for major multinationals in his career like BASF, Novartis, Sanofi, etc., He has worked in Discovery, Natural products, Bulk drugs, Generics, Intermediates, Fine chemicals, Neutraceuticals, GMP, Scaleups, etc, he is now helping millions, has 9 million plus hits on Google on all Organic chemistry websites. His friends call him Open superstar worlddrugtracker. His New Drug Approvals, Green Chemistry International, All about drugs, Eurekamoments, Organic spectroscopy international, etc in organic chemistry are some most read blogs He has hands on experience in initiation and developing novel routes for drug molecules and implementation them on commercial scale over a 32 PLUS year tenure till date Feb 2023, Around 35 plus products in his career. He has good knowledge of IPM, GMP, Regulatory aspects, he has several International patents published worldwide . He has good proficiency in Technology transfer, Spectroscopy, Stereochemistry, Synthesis, Polymorphism etc., He suffered a paralytic stroke/ Acute Transverse mylitis in Dec 2007 and is 90 %Paralysed, He is bound to a wheelchair, this seems to have injected feul in him to help chemists all around the world, he is more active than before and is pushing boundaries, He has 100 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 100 Lakh plus views on dozen plus blogs, 227 countries, 7 continents, He makes himself available to all, contact him on +91 9323115463, email amcrasto@gmail.com, Twitter, @amcrasto , He lives and will die for his family, 90% paralysis cannot kill his soul., Notably he has 38 lakh plus views on New Drug Approvals Blog in 227 countries......https://newdrugapprovals.wordpress.com/ , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc He has total of 32 International and Indian awards

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FDA Approves Perjeta for Neoadjuvant Breast Cancer Treatment

October 1, 2013 3:30 am / 2 Comments on FDA Approves Perjeta for Neoadjuvant Breast Cancer Treatment


 

 

 

 

The structure of HER2 and pertuzumab

pertuzumab

Sept. 30, 2013 — The U.S. Food and Drug Administration today granted accelerated approval to Perjeta (pertuzumab) as part of a complete treatment regimen for patients with early stage breast cancer before surgery (neoadjuvant setting). Perjeta is the first FDA-approved drug for the neoadjuvant treatment of breast cancer.

Perjeta was approved in 2012 for the treatment of patients with advanced or late-stage (metastatic) HER2-positive breast cancer. HER2-positive breast cancers have increased amounts of the HER2 protein that contributes to cancer cell growth and survival

 

cut paste of my old article

he European Medicines Agency (EMA) has approved Roche’s PERJETA (pertuzumab) for patients with previously untreated HER2-positive metastatic breast cancer (mBC)

MARCH 5, 2013 8:59 AM / 4 COMMENTS /

 

 

The structure of HER2 and pertuzumab

march 4, 2013

The European Medicines Agency (EMA) has approved Roche’s PERJETATM (pertuzumab) RG1273 for patients with previously untreated HER2-positive metastatic breast cancer (mBC). PERJETA is approved in combination with Herceptin® (trastuzumab) and docetaxel in adult patients with HER2-positive metastatic or locally recurrent unresectable breast cancer, who have not received previous anti-HER2 therapy or chemotherapy for their metastatic disease\
The European approval comes after the Phase III CLEOPATRA trial showed that the combination of PERJETA, Herceptin and chemotherapy provided patients with a median of 6.1 months longer without their disease worsening or death (progression-free survival, PFS) and provided a 34 percent reduction in the risk of death (overall survival) compared to Herceptin and chemotherapy alone.
Herceptin was the first monoclonal antibody developed for the treatment of HER2-positive breast cancer and has increased survival times for patients so that they are now the same as for patients with HER2-negative breast cancer. Before Herceptin treatment, shorter survival outcomes were expected for patients diagnosed with HER2-positive breast cancer, compared to patients with HER2-negative disease.(1) In the CLEOPATRA study, PERJETA in combination with Herceptin and chemotherapy has shown the extension of survival times for patients with this aggressive disease even further than Herceptin
About PERJETA
PERJETA is designed specifically to prevent the HER2 receptor from pairing (dimerising) with other HER receptors (EGFR/HER1, HER3 and HER4) on the surface of cells, a process that is believed to play a role in tumour growth and survival. Binding of PERJETA to HER2 may also signal the body’s immune system to destroy the cancer cells. The combination of PERJETA, Herceptin and chemotherapy is thought to provide a more comprehensive blockade of HER signalling pathways.

Pertuzumab (also called 2C4, trade name Perjeta) is a monoclonal antibody. The first of its class in a line of agents called “HER dimerization inhibitors”. By binding to HER2, it inhibits the dimerization of HER2 with other HER receptors, which is hypothesized to result in slowed tumor growth.[1] Pertuzumab received US FDA approval for the treatment of HER2-positive metastatic breast cancer on June 8, 2012.[2] Pertuzumab was developed at Genentech and is now owned by Roche which acquired Genentech in 2009.

Clinical trials

Early clinical trials of pertuzumab in prostate, breast, and ovarian cancers have been met with limited success.[3]

The dosage of pertuzumab used in the pivotal phase III CLEOPATRA (Clinical Evaluation of Pertuzumab and Trastuzumab) trial was as follows: IV 840 mg loading dose followed by IV 420 mg every three weeks.[4]

The pharmacokinetics of intravenous pertuzumab appear to be unaffected by age and no drug-drug interaction has been reported with docetaxel. The pharmacokinetics and pharmacodynamics of pertuzumab were summarized in a Feb 2012 review by Gillian Keating.[4]

The combination of pertuzumab plus trastuzumab plus docetaxel, as compared with placebo plus trastuzumab plus docetaxel, when used as first-line treatment for HER2-positive metastatic breast cancer, significantly prolonged progression-free survival, with no increase in cardiac toxic effects in the randomized, double-blind, multinational, phase III CLEOPATRA trial.[5]

Intravenous pertuzumab is currently being evaluated in patients with breast cancer in the following trials: MARIANNE (advanced breast cancer), NEOSPHERE (early breast cancer), TRYPHAENA (HER2-positive stage II/III breast cancer) and APHINITY (HER2-positive nonmetastatic breast cancer).[4]

References

  1. de Bono, Johann S.; Bellmunt, J; Attard, G; Droz, JP; Miller, K; Flechon, A; Sternberg, C; Parker, C et al. (20 January 2007). “Open-Label Phase II Study Evaluating the Efficacy and Safety of Two Doses of Pertuzumab in Castrate Chemotherapy-Naive Patients With Hormone-Refractory Prostate Cancer”. Journal of Clinical Oncology 25 (3): 257–262.doi:10.1200/JCO.2006.07.0888. PMID 17235043.
  2. “FDA Approves Perjeta (Pertuzumab) for People With HER2-Positive Metastatic Breast Cancer” (Press release). Genentech. Retrieved 2012-06-09.
  3. Genentech press release – May 15, 2005
  4. Keating GM. Pertuzumab: in the first-line treatment of HER2-positive metastatic breast cancer. Drugs 2012 Feb 12; 72 (3): 353-60.Link text
  5. Baselga J, Cortés J, Kim SB, and the CLEOPATRA Study Group. Pertuzumab plus trastuzumab plus docetaxel for metastatic breast cancer. N Engl J Med 2012 Jan 12; 366 (2): 109-19. Link text
About the CLEOPATRA study
CLEOPATRA (CLinical Evaluation Of Pertuzumab And TRAstuzumab) is an international, phase III, randomised, double-blind, placebo-controlled study. The study evaluated the efficacy and safety profile of PERJETA combined with Herceptin and docetaxel chemotherapy compared to Herceptin and chemotherapy plus placebo in 808 people with previously untreated HER2-positive mBC or that had returned after prior therapy in the adjuvant (after surgery) or neoadjuvant (before surgery) setting.
In CLEOPATRA, the most common adverse reactions (rate greater than 30 percent) seen with the combination of PERJETA, Herceptin and chemotherapy were diarrhoea, hair loss, low white blood cell count with or without fever, upset stomach, fatigue, rash and peripheral neuropathy (numbness, tingling or damage to the nerves). The most common Grade 3–4 adverse events (rate greater than 2 percent) were low white blood cell count with or without fever, decrease in a certain type of white blood cell, diarrhoea, damage to the nerves, decrease in red blood cell count, weakness and fatigue.
About breast cancer
Breast cancer is the most common cancer among women worldwide.(4) Each year, about 1.4 million new cases of breast cancer are diagnosed worldwide, and over 450,000 women will die of the disease annually.(4) In HER2-positive breast cancer, increased quantities of the human epidermal growth factor receptor 2 (HER2) are present on the surface of the tumour cells. This is known as “HER2 positivity” and affects approximately 15-20 percent of women with breast cancer.(5) HER2-positive cancer is a particularly aggressive form of breast cancer.

 

 

Novel Drug Shows Promise for Early Stage Breast Cancer

September 11, 2013 3:21 am / Leave a comment


pertuzumab

TUESDAY Sept. 10, 2013 — A drug already used to treat advanced breast cancer also appears to shrink early stage breast tumors, potentially offering women a first-of-its-kind treatment option, U.S. health regulators say.

read all at

http://www.drugs.com/news/novel-shows-promise-early-stage-breast-cancer-47311.html

Roche’s Perjeta Gets FDA Priority Review

July 3, 2013 3:29 am / 6 Comments on Roche’s Perjeta Gets FDA Priority Review


The structure of HER2 and pertuzumab

FDA grants Roche’s Perjeta regimen Priority Review for use before surgery in HER2-positive early-stage breast cancer
Application follows proposed new FDA pathway designed to help bring promising medicines to people with earlier stages of breast cancer faster
Perjeta is one of the first medicines the FDA will evaluate as an option given before surgery (neoadjuvant treatment)
Perjeta, in combination with Herceptin and chemotherapy, was approved by the FDA in 2012 for HER2-positive metastatic breast cancer

Pertuzumab (also called 2C4, trade name Perjeta) is a monoclonal antibody. The first of its class in a line of agents called “HER dimerization inhibitors”. By binding to HER2, it inhibits the dimerization of HER2 with other HER receptors, which is hypothesized to result in slowed tumor growth. Pertuzumab received US FDA approval for the treatment of HER2-positive metastatic breast cancer on June 8, 2012. Pertuzumab was developed at Genentech and is now owned by Roche which acquired Genentech in 2009.

Early clinical trials of pertuzumab in prostate, breast, and ovarian cancers met with limited success.

The dosage of pertuzumab used in the pivotal phase III CLEOPATRA (Clinical Evaluation of Pertuzumab and Trastuzumab) trial was as follows: IV 840 mg loading dose followed by IV 420 mg every three weeks.

The pharmacokinetics of intravenous pertuzumab appear to be unaffected by age and no drug-drug interaction has been reported with docetaxel. The pharmacokinetics and pharmacodynamics of pertuzumab were summarized in a Feb 2012 review by Gillian Keating.

The combination of pertuzumab plus trastuzumab plus docetaxel, as compared with placebo plus trastuzumab plus docetaxel, when used as first-line treatment for HER2-positive metastatic breast cancer, significantly prolonged progression-free survival, with no increase in cardiac toxic effects in the randomized, double-blind, multinational, phase III CLEOPATRA trial.

Intravenous pertuzumab is currently being evaluated in patients with breast cancer in the following trials: MARIANNE (advanced breast cancer), NEOSPHERE (early breast cancer), TRYPHAENA (HER2-positive stage II/III breast cancer) and APHINITY (HER2-positive nonmetastatic breast cancer)

The European Medicines Agency (EMA) has approved Roche’s PERJETA (pertuzumab) for patients with previously untreated HER2-positive metastatic breast cancer (mBC)

March 5, 2013 8:59 am / 6 Comments on The European Medicines Agency (EMA) has approved Roche’s PERJETA (pertuzumab) for patients with previously untreated HER2-positive metastatic breast cancer (mBC)


The structure of HER2 and pertuzumab

march 4, 2013

The European Medicines Agency (EMA) has approved Roche’s PERJETATM (pertuzumab) RG1273 for patients with previously untreated HER2-positive metastatic breast cancer (mBC). PERJETA is approved in combination with Herceptin® (trastuzumab) and docetaxel in adult patients with HER2-positive metastatic or locally recurrent unresectable breast cancer, who have not received previous anti-HER2 therapy or chemotherapy for their metastatic disease\
The European approval comes after the Phase III CLEOPATRA trial showed that the combination of PERJETA, Herceptin and chemotherapy provided patients with a median of 6.1 months longer without their disease worsening or death (progression-free survival, PFS) and provided a 34 percent reduction in the risk of death (overall survival) compared to Herceptin and chemotherapy alone.
Herceptin was the first monoclonal antibody developed for the treatment of HER2-positive breast cancer and has increased survival times for patients so that they are now the same as for patients with HER2-negative breast cancer. Before Herceptin treatment, shorter survival outcomes were expected for patients diagnosed with HER2-positive breast cancer, compared to patients with HER2-negative disease.(1) In the CLEOPATRA study, PERJETA in combination with Herceptin and chemotherapy has shown the extension of survival times for patients with this aggressive disease even further than Herceptin
About PERJETA
PERJETA is designed specifically to prevent the HER2 receptor from pairing (dimerising) with other HER receptors (EGFR/HER1, HER3 and HER4) on the surface of cells, a process that is believed to play a role in tumour growth and survival. Binding of PERJETA to HER2 may also signal the body’s immune system to destroy the cancer cells. The combination of PERJETA, Herceptin and chemotherapy is thought to provide a more comprehensive blockade of HER signalling pathways.

Pertuzumab (also called 2C4, trade name Perjeta) is a monoclonal antibody. The first of its class in a line of agents called “HER dimerization inhibitors”. By binding to HER2, it inhibits the dimerization of HER2 with other HER receptors, which is hypothesized to result in slowed tumor growth.[1] Pertuzumab received US FDA approval for the treatment of HER2-positive metastatic breast cancer on June 8, 2012.[2] Pertuzumab was developed at Genentech and is now owned by Roche which acquired Genentech in 2009.

Clinical trials

Early clinical trials of pertuzumab in prostate, breast, and ovarian cancers have been met with limited success.[3]

The dosage of pertuzumab used in the pivotal phase III CLEOPATRA (Clinical Evaluation of Pertuzumab and Trastuzumab) trial was as follows: IV 840 mg loading dose followed by IV 420 mg every three weeks.[4]

The pharmacokinetics of intravenous pertuzumab appear to be unaffected by age and no drug-drug interaction has been reported with docetaxel. The pharmacokinetics and pharmacodynamics of pertuzumab were summarized in a Feb 2012 review by Gillian Keating.[4]

The combination of pertuzumab plus trastuzumab plus docetaxel, as compared with placebo plus trastuzumab plus docetaxel, when used as first-line treatment for HER2-positive metastatic breast cancer, significantly prolonged progression-free survival, with no increase in cardiac toxic effects in the randomized, double-blind, multinational, phase III CLEOPATRA trial.[5]

Intravenous pertuzumab is currently being evaluated in patients with breast cancer in the following trials: MARIANNE (advanced breast cancer), NEOSPHERE (early breast cancer), TRYPHAENA (HER2-positive stage II/III breast cancer) and APHINITY (HER2-positive nonmetastatic breast cancer).[4]

References

  1. de Bono, Johann S.; Bellmunt, J; Attard, G; Droz, JP; Miller, K; Flechon, A; Sternberg, C; Parker, C et al. (20 January 2007). “Open-Label Phase II Study Evaluating the Efficacy and Safety of Two Doses of Pertuzumab in Castrate Chemotherapy-Naive Patients With Hormone-Refractory Prostate Cancer”. Journal of Clinical Oncology 25 (3): 257–262. doi:10.1200/JCO.2006.07.0888. PMID 17235043.
  2. “FDA Approves Perjeta (Pertuzumab) for People With HER2-Positive Metastatic Breast Cancer” (Press release). Genentech. Retrieved 2012-06-09.
  3. Genentech press release – May 15, 2005
  4. Keating GM. Pertuzumab: in the first-line treatment of HER2-positive metastatic breast cancer. Drugs 2012 Feb 12; 72 (3): 353-60.Link text
  5. Baselga J, Cortés J, Kim SB, and the CLEOPATRA Study Group. Pertuzumab plus trastuzumab plus docetaxel for metastatic breast cancer. N Engl J Med 2012 Jan 12; 366 (2): 109-19. Link text
About the CLEOPATRA study
CLEOPATRA (CLinical Evaluation Of Pertuzumab And TRAstuzumab) is an international, phase III, randomised, double-blind, placebo-controlled study. The study evaluated the efficacy and safety profile of PERJETA combined with Herceptin and docetaxel chemotherapy compared to Herceptin and chemotherapy plus placebo in 808 people with previously untreated HER2-positive mBC or that had returned after prior therapy in the adjuvant (after surgery) or neoadjuvant (before surgery) setting.
In CLEOPATRA, the most common adverse reactions (rate greater than 30 percent) seen with the combination of PERJETA, Herceptin and chemotherapy were diarrhoea, hair loss, low white blood cell count with or without fever, upset stomach, fatigue, rash and peripheral neuropathy (numbness, tingling or damage to the nerves). The most common Grade 3–4 adverse events (rate greater than 2 percent) were low white blood cell count with or without fever, decrease in a certain type of white blood cell, diarrhoea, damage to the nerves, decrease in red blood cell count, weakness and fatigue.
About breast cancer
Breast cancer is the most common cancer among women worldwide.(4) Each year, about 1.4 million new cases of breast cancer are diagnosed worldwide, and over 450,000 women will die of the disease annually.(4) In HER2-positive breast cancer, increased quantities of the human epidermal growth factor receptor 2 (HER2) are present on the surface of the tumour cells. This is known as “HER2 positivity” and affects approximately 15-20 percent of women with breast cancer.(5) HER2-positive cancer is a particularly aggressive form of breast cancer.