Antibody drug conjugates (ADCs) are undoubtedly one of the hottest research areas in recent years. To date, there are 15 approved ADCs in the world, of which 13 have been approved by the FDA, one in China (Disitamab Vedotin) and one in Japan (Akalux).
Similar to HER2, Trop-2 is a new hot target for research. Trodelvy has been one of the products receiving much attention in recent years, and Dato-DXd from AstraZeneca/Daiichi Sankyo is also advancing rapidly.
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Studies have shown that human epidermal growth factor receptor-2 (HER2) is overexpressed in many tumors and is one of the most common target antigens for ADCs.
Similar to HER2, Trop-2 is a new hot target for research. Trodelvy has been one of the products receiving much attention in recent years, and Dato-DXd from AstraZeneca/Daiichi Sankyo is also advancing rapidly.
List of New Anti-cancer Drugs Approved By FDA In The First Half of 2023.pdfDoriaFang
What are the new anti-cancer drugs approved in the first half of the year? The new drugs approved covered a variety of solid tumors and blood tumor types.
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Kadcyla (ado-trastuzumab emtansine, T-DM1), a second-generation antibody-drug conjugate (ADC), is the most commercially successful ADC. It is the first ADC approved for solid tumors (breast cancer).
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TROP-2 is expressed in many tumor types, making it an emerging and popular target for ADC development. This article introduces clinical development of ADC drugs targeting TROP-2.
Summary of Approved HER2 ADCs on The Market & in Clinical Trials.pdfDoriaFang
Studies have shown that human epidermal growth factor receptor-2 (HER2) is overexpressed in many tumors and is one of the most common target antigens for ADCs.
On February 10, 2020, Clarivate Analytics released the "The 2020 Cortellis Drugs to Watch" annual report, predicting 11 new drugs that will be launched in 2020 and with sales expected to exceed $ 1 billion in 2024. Among these 11 drugs, 2 are anti-tumor drugs. Coincidentally, these 2 drugs are Antibody–Drug Conjugates (ADC).
ADC Drugs For Non-small Cell Lung Cancer.pdfDoriaFang
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This article introduces FRα targets and FRα ADCs in clinical trials. There is only one FRα targeting ADC for ovarian cancer - mirvetuximab soravtansine-gynx (Elahere) and a few in clinical trials.
New Oncology Trends ADCs, Bispecific Antibodies & CAR-T Cell.pdfDoriaFang
Scientists are turning their attention to more innovative therapeutic strategies, such as next-generation ADCs, bispecific antibodies and CAR-T cell therapies, etc. as cancer therapy.
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Targovax’s lead clinical candidate, ONCOS-102, is a genetically modified oncolytic adenovirus, which has been engineered to selectively infect cancer cells and activate the immune system against the tumor. Following very encouraging clinical data in several indications, both as monotherapy and in combinations, ONCOS-102 is progressing into a randomized phase 2 trial in melanoma patients resistant to PD-1 checkpoint inhibitor treatment.
Building on successful clinical studies which have provided deep mechanistic insights into the tumor biology and the human immune systems, Targovax is researching circular RNA (circRNA) as novel cancer medicines. In addition, Targovax has a KRAS immunotherapy program, with lead cancer vaccine candidate, TG01, expected to enter the clinic in an enhanced format in the second half of 2022. Together this provides Targovax with a rich pipeline of innovative future immunotherapy product candidates to follow ONCOS-102.
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An high-level overview : The overall objective is to prioritize solid tumors with pan-FGFR driven cancer, evaluate clinical benchmarks and develop TPP for lead indication
- Ashish Jaiswal | Email: ashish.jaiswal8@gmail.com
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Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
On February 10, 2020, Clarivate Analytics released the "The 2020 Cortellis Drugs to Watch" annual report, predicting 11 new drugs that will be launched in 2020 and with sales expected to exceed $ 1 billion in 2024. Among these 11 drugs, 2 are anti-tumor drugs. Coincidentally, these 2 drugs are Antibody–Drug Conjugates (ADC).
ADC Drugs For Non-small Cell Lung Cancer.pdfDoriaFang
Despite the rapid progress of targeted therapy in the field of NSCLC (non-small cell lung cancer), there are still unmet needs. This article summarizes the latest progress in the targeted therapy of Her2, Her3 and Trop-2 in NSCLC.
FRα Targeting ADCs for Ovarian cancer.pdfDoriaFang
This article introduces FRα targets and FRα ADCs in clinical trials. There is only one FRα targeting ADC for ovarian cancer - mirvetuximab soravtansine-gynx (Elahere) and a few in clinical trials.
New Oncology Trends ADCs, Bispecific Antibodies & CAR-T Cell.pdfDoriaFang
Scientists are turning their attention to more innovative therapeutic strategies, such as next-generation ADCs, bispecific antibodies and CAR-T cell therapies, etc. as cancer therapy.
Targovax Next generation immune activators for solid tumorsRoarFredriksen1
Targovax (OSE:TRVX) is a clinical stage immuno-oncology company developing immune activators to target hard-to-treat solid tumors. Targovax’s focus is to activate the patient’s immune system to fight cancer, and to bring benefit to cancer patients with few available treatment alternatives. Targovax is developing its product candidates in different cancer indications, including melanoma, mesothelioma, and multiple myeloma, and has demonstrated a favorable safety and tolerability profile.
Targovax’s lead clinical candidate, ONCOS-102, is a genetically modified oncolytic adenovirus, which has been engineered to selectively infect cancer cells and activate the immune system against the tumor. Following very encouraging clinical data in several indications, both as monotherapy and in combinations, ONCOS-102 is progressing into a randomized phase 2 trial in melanoma patients resistant to PD-1 checkpoint inhibitor treatment.
Building on successful clinical studies which have provided deep mechanistic insights into the tumor biology and the human immune systems, Targovax is researching circular RNA (circRNA) as novel cancer medicines. In addition, Targovax has a KRAS immunotherapy program, with lead cancer vaccine candidate, TG01, expected to enter the clinic in an enhanced format in the second half of 2022. Together this provides Targovax with a rich pipeline of innovative future immunotherapy product candidates to follow ONCOS-102.
BCMACD3 Bispecific Antibodies for Multiple Myeloma (MM).pdfDoriaFang
Currently, BCMA/CD3 bispecific antibodies have shown therapeutic potential in R/R MM. Here, we will explore the BCMA/CD3 bispecific antibodies under investigation for treating MM.
Report Back from San Antonio Breast Cancer Symposium (SABCS 2022)bkling
Curious about the latest developments in Early-Stage Breast Cancer and Metastatic Breast Cancer Research? Join us as Dr. Anne Blaes, the Division Director of Hematology/Oncology/Transplantation and Professor in Hematology/Oncology at the University of Minnesota, breaks down the most recent developments released at the annual San Antonio Breast Cancer Symposium regarding early-stage and metastatic breast cancer research.
Summary of PROTAC Degraders in Clinical Trials.pdfDoriaFang
A major class of molecules that may enable such proteins to be modulated through TPD are known as proteolysis-targeting chimera (PROTAC) protein degraders. Here we talk about the summary of PROTAC degraders in clinical trials.
An high-level overview : The overall objective is to prioritize solid tumors with pan-FGFR driven cancer, evaluate clinical benchmarks and develop TPP for lead indication
- Ashish Jaiswal | Email: ashish.jaiswal8@gmail.com
Peptide drug conjugates (pd cs) new generation of targeted cancer treatmentDoriaFang
As a new generation of targeted cancer treatment, the well-designed PDC not only retains the advantages of traditional drug delivery, but also increases the penetration of tumor drugs and reduces the toxicity to liver and kidney.
Similar to Summary of ADCs in Clinical Phase 3.pdf (18)
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
micro teaching on communication m.sc nursing.pdfAnurag Sharma
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Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
263778731218 Abortion Clinic /Pills In Harare ,sisternakatoto
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These lecture slides, by Dr Sidra Arshad, offer a quick overview of the physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar lead (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
6. Describe the flow of current around the heart during the cardiac cycle
7. Discuss the placement and polarity of the leads of electrocardiograph
8. Describe the normal electrocardiograms recorded from the limb leads and explain the physiological basis of the different records that are obtained
9. Define mean electrical vector (axis) of the heart and give the normal range
10. Define the mean QRS vector
11. Describe the axes of leads (hexagonal reference system)
12. Comprehend the vectorial analysis of the normal ECG
13. Determine the mean electrical axis of the ventricular QRS and appreciate the mean axis deviation
14. Explain the concepts of current of injury, J point, and their significance
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. Chapter 3, Cardiology Explained, https://www.ncbi.nlm.nih.gov/books/NBK2214/
7. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Rasamanikya is a excellent preparation in the field of Rasashastra, it is used in various Kushtha Roga, Shwasa, Vicharchika, Bhagandara, Vatarakta, and Phiranga Roga. In this article Preparation& Comparative analytical profile for both Formulationon i.e Rasamanikya prepared by Kushmanda swarasa & Churnodhaka Shodita Haratala. The study aims to provide insights into the comparative efficacy and analytical aspects of these formulations for enhanced therapeutic outcomes.
1. Huateng Pharma https://us.huatengsci.com/
1
Summary of ADCs in Clinical Phase 3
Antibody drug conjugates (ADCs) are undoubtedly one of the hottest research areas in recent years. To
date, there are 15 approved ADCs in the world, of which 13 have been approved by the FDA, one in
China (Disitamab Vedotin) and one in Japan (Akalux).
Figure 1. FDA Approved ADCs [1]
Global sales of marketed ADCs exceeded $7 billion in 2022, and have already exceeded $5 billion in the
first half of 2023, with the full year expected to surpass $10 billion.
Table. Sales of Approved ADCs from 2020 ~ 2023H1
In the first half of 2023, two ADC drugs reached $1 billion in sales, Kadcyla and Enhertu. Based on
Enhertu's growth rate over the last two years (3,450% year-on-year in 2021 and 153.52% year-on-year in
2022), Enhertu is expected to surpass Kadcyla in sales this year.
2. Huateng Pharma https://us.huatengsci.com/
2
Besides approved ADCs, as of January 2023, close to 300 ADC drugs have entered the clinic, of which
92 have been discontinued due to toxicity or lack of efficacy, and 164 are in clinical drug development. As
for the drugs in clinical development, 93 are in clinical phase I, 38 are in clinical phase I/II, 17 are in
clinical phase II, and 15 are already in clinical phase II/III or III. [1]
Antigens targeted by clinically tested ADCs
The choice of the target antigen and selection of the monoclonal antibody are important parameters in
determining the efficacy, therapeutic window, and toxicity profile of ADCs. Target antigens should be
highly expressed in tumors, but low or even not in normal tissues, or at least limited to a given tissue type.
Currently, popular targets include CD family (CD33, CD30, CD22, CD79β, CD19), HER2, Nectin-4,
TROP2, BCMA, EGFR, etc.
Figure 2. Antigens targeted by clinically tested ADCs [1]
Linkers utilized by clinically tested ADCs
Linker design plays a critical role in modulating ADC stability in the systemic circulation and payload
release efficiency in the tumors, which thus affects ADC pharmacokinetic (PK), efficacy and toxicity
profiles.
Broadly speaking, linkers can be divided into two categories: cleavable or non-cleavable linkers. Of the
clinical ADCs, 54% use cleavable linkers, which represent the most utilized linker class. [1]
Cleavable linkers depend on physiological conditions in the cell to cleave the linker and can be further
subdivided into acid sensitive, protease sensitive or glutathione sensitive. Non-cleavable linkers form
irreducible bonds with amino acid residues of the mAb, and therefore should be more stable in the
3. Huateng Pharma https://us.huatengsci.com/
3
bloodstream, have longer half-lives, and lower off-target toxicity. Non-cleavable linkers require ADC
cleavage by the lysosome to release the payload.
Figure 3. Linkers utilized by clinically tested ADCs [1]
Payloads utilized by clinically tested ADCs
The payloads utilized in ADCs are highly potent cytotoxic drugs, exerting their effects on critical cellular
processes required for survival. Payloads fall into four major classes: 1) microtubule
inhibitors (maytansine derivatives (DM1/DM4) or auristatins (MMAE/MMAF)), 2) DNA-damaging
agents (SN-38 or DXd, 3) topoisomerase I inhibitors, and 4) targeted small molecules (SM).
Figure 4. Payloads utilized by clinically tested ADCs [1]
4. Huateng Pharma https://us.huatengsci.com/
4
ADCs In Clinical Phase 3
Below, a selection of ADCs in clinical phase 3 are listed.
Name Company Target Indications Status
Trastuzumab
duocarmazine
(SYD985)
Byondis HER2 HER2-positive breast cancer
FDA
declined
Patritumab
deruxtecan
(HER3-DXd)
Daiichi Sankyo HER3 NSCLC, breast cancer Phase 3
Datopotamab
deruxtecan
(Dato-DXd)
Daiichi Sankyo Trop-2 PD-L1+ TNBC, NSCLC, breast cancer Phase 3
Telisotuzumab
Vedotin
(ABBV-399)
AbbVie, Inc. c-Met NSCLC Phase 3
Depatuxizumab
mafodotin
(ABT-414)
AbbVie, Inc. EGFR Gliosarcoma Phase 3
Tusamitamab
Ravtansine
(SAR408701)
ImmunoGen,
Inc./Sanofi
CEACAM5 NSCLC Phase 3
FS-1502
LegoChem
Biosciences/复兴
HER2 HER2-positive breast cancer Phase 3
ARX788
Ambrx, Inc./Zhejiang
Medicine Co.
HER3 Brest cancer Phase 3
BAT8001 Bio-Thera Solutions HER2 HER2-positive breast cancer Phase 3
A166 Kelun-Biotech HER2
HER2-positive breast
cancer,Cholangiocarcinoma,bladder
cancer
Phase 3
SKB-264 Kelun-Biotech/Merck Trop-2 TNBC Phase 3
SHR-A1811
Hengrui
Pharmaceutical
HER2 Brest cancer Phase 3
DP303c
CSPC ZhongQi
Pharmaceutical
HER2
HER2-positive breast cancer, Ovarian
cancer, Gastric Cancer
Phase 3
5. Huateng Pharma https://us.huatengsci.com/
5
MRG002 Miracogen HER2
HER2-positive uroepithelial carcinoma,
Gastroesophageal junction cancer,
HER2-positive breast cancer
Phase 3
MRG003 Miracogen EGFR HNSCC Phase 3
Trastuzumab duocarmazine(SYD985)
SYD985 (trastuzumab duocarmazine) is a next-generation HER2 ADC developed by Byondis utilizing its
proprietary duocarmazine linker-drug (LD) technology ByonZine®. It is comprised of the anti-HER2
monoclonal antibody trastuzumab and a cleavable linker-drug called
valine-citrulline-seco-DUocarmycin-hydroxyBenzamide-Azaindole (vc-seco-DUBA). [2]
Figure 5. Structure of SYD985 [2]
On 16 May, 2023, The FDA has issued a complete response letter for a biologics license application (BLA)
for SYD985 as a treatment for patients with HER2-positive, unresectable, locally advanced or metastatic
breast cancer. In the CRL, the regulatory agency requested additional information that will require
additional time and resources that extend beyond the current evaluation period.
Patritumab deruxtecan(HER3-DXd,U3-1402)
Patritumab deruxtecan (HER3-DXd, U3-1402) is the world's first HER3 ADC developed by Daiichi Sankyo
and is currently being explored for indications such as breast cancer and non-small cell lung cancer.
HER3-DXd is derived by conjugating patritumab (U3-1287), a monoclonal antibody to the extracellular
structural domain of HER3, and deruxtecan, a cytotoxic topoisomerase I inhibitor, by a maleimide-GGFG
linker via a cysteine-sited coupling, with a DAR value of 8 (Figure 6).
Figure 6. Structure of HER3-DXd
6. Huateng Pharma https://us.huatengsci.com/
6
At ASCO 2023, Daiichi Sankyo further announced Part A results from a Phase 2 study of HER3-Dxd in
patients with HER2-negative metastatic breast cancer (MBC). The results showed an overall response
rate (ORR) of 35%, a clinical benefit rate (CBR) of 48%, a median duration of response (DOR) of 10.0
months, and a 6-month PFS rate of 60% in the overall population (Figure 7) [3].
Figure 7. Phase 2 study of HER3-DXd [3]
Recently, Daiichi Sankyo at the 2023 WCLC Congress presented the primary results of the pivotal phase
2 study HERTHENA-Lung01 of HER3-DXd for the treatment of patients with EGFR-mutated non-small
cell lung cancer. The results showed that a confirmed ORR of 29.8% was observed with HER3-DXd (5.6
mg/kg) in 225 patients with EGFR-mutated NSCLC, as assessed by blinded independent center review
(BICR), with 1 complete response(CR), 66 partial response(PR), and 99 stable disease (SD) with a DOR
of 6.4 months and a disease Control Rate (DCR) of 73.8%.
As of May 18, 2023, the median progression-free survival (PFS) was 5.5 months and the median overall
survival (OS) was 11.9 months (Figure 8) [4].
7. Huateng Pharma https://us.huatengsci.com/
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Figure 8. HER3-DXd- HERTHENA-Lung01 results [4]
Datopotamab deruxtecan(Dato-DXd, DS-1062)
Dato-DXd, a targeted Trop-2 ADC co-developed by AstraZeneca and Daiichi Sankyo, couples a
recombinant humanized anti-Trop-2 IgG1 antibody with a topoisomerase I inhibitor (DXd) via a
tetrapeptide-based linker. The tetrapeptide-based linker releases DXd upon proteolytic processing by
lysosomal enzymes such as histone proteases.On average, the number of targets of the drug linker for an
antibody molecule is 4 (Figure 9) [5].
Figure 9. Structure of Dato-DXd [4]
Unlike Trodelvy, the first approved Trop-2 ADC for the treatment of breast cancer, AstraZeneca and
Daiichi Sankyo plan to apply Dato-DXd for the treatment of advanced non-small cell lung cancer.
At the 2023 ASCO Annual Meeting, AstraZeneca and Daiichi Sankyo presented results from a
(TROPION-Lung02) study of Dato-DXd for advanced NSCLC. The results showed that Dato-DXd in
combination with pembrolizumab or Dato-DXd in combination with pembrolizumab and platinum-based
chemotherapy had an ORR of 38% and 49%, a DCR of 84% and 87%, and a PFS of 8.3 months and 7.3
months, respectively, in the overall population of advanced NSCLC. In the first-line treatment population,
the ORR of Dato-DXd in combination with pembrolizumab or Dato-DXd in combination with
pembrolizumab and platinum-based chemotherapy was 50% and 57%, respectively, with a DCR of 91%
in both cases, and the median DORs have not yet been reached in either case [5].
8. Huateng Pharma https://us.huatengsci.com/
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However, Dato-DXd is currently experiencing safety issues, and the results of the TROPION-Lung01 trial,
while meeting the clinical primary endpoint, showed serious safety issues, with not only the discovery of
interstitial pneumonitis, but also a grade 5 adverse event in which the patient died due to an adverse
reaction to the drug.
Huateng Pharma is dedicated to being your most reliable partner to provide chemical synthesis and
high-quality PEG linkers for ADC drugs. We are committed to promoting the progress of your ADC
discovery and development projects.
References:
[1] Maecker H, Jonnalagadda V, Bhakta S, Jammalamadaka V, Junutula JR. Exploration of the antibody-drug conjugate
clinical landscape. MAbs. 2023;15(1):2229101. doi:10.1080/19420862.2023.2229101
[2] ASCO Highlights 2023, DAIICHI SANKYO CO., LTD.
[3] https://www.daiichisankyo.com/files/news/pressrelease/pdf/202309/20230910_E3.pdf
[4] Daisuke Okajima et.al, Datopotamab Deruxtecan, a Novel TROP2-directed Antibody–drug Conjugate, Demonstrates
Potent Antitumor Activity by Efficient Drug Delivery to Tumor Cells, Mol Cancer Ther 2021;20:2329–40
[5] ASCO-IR-deck-June-2023.pdf (astrazeneca.com)