SIMRIS GROUP CONFIRMS STRATEGIC DIRECTION AND ADVANCES TWO AMANITIN-BASED ADC PROGRAMS TOWARD THE CLINIC
8 september, 11:45
Simris Group AB (publ) (“Simris” or the “Company”) confirms its strategy to develop amanitin-derived novel payloads to overcome treatment resistance in both liquid and solid tumors. Under strengthened specialist leadership, the Company will focus on advancing two proprietary Antibody-Drug Conjugate (“ADC”) programs into clinical development by late 2027 or early 2028.
On 19 March 2026, Simris announced that the Company was evaluating options to expand its ADC payload development program, including two strategic paths: continued focus on pre-clinical development of its microcystin-based ADC platform, or a more capital-intensive expansion involving the integration of an experienced ADC development team and a clinically validated payload class with the potential to accelerate the Company's path toward clinical development.
Following a thorough evaluation, the Company has confirmed its strategic direction to advance its ADC development activities, with an increased focus on accelerating amanitin-based ADC programs toward the clinic. This decision reflects the board of directors' assessment that Simris is well positioned to build on the work already undertaken and to advance its programs more rapidly toward clinical proof of concept under the leadership of Professor Andreas Pahl and the newly strengthened development team.
Simultaneously, the Company will continue with the previously announced ongoing Microcystin-ADC studies designed to generate in vivo safety and efficacy data for candidate microcystin payloads.
Treatment resistance remains a fundamental challenge in cancer. The next wave of ADC innovation will require differentiated payloads, such as amanitin, with novel mechanisms capable of addressing cancers that no longer respond to existing therapies. The Company's strategy combines clinically supported and de-risked amanitin biology, established oncology targets and an experienced ADC development team.
Execution of the strategy will be led by Professor Andreas Pahl, newly appointed Chief Executive Officer of Simris Biologics, supported by a strengthened development team with extensive experience in amanitin and ADC development spanning payload development, manufacturing, regulatory strategy, and clinical development.
Amanitin inhibits RNA polymerase II, offering a differentiated mechanism of action from the payload classes that currently dominate the ADC field. Simris will initially focus on two proprietary amanitin-based ADC programs, SMR-101 and SMR-102. SMR-101 is a B-cell depleting amanitin-based ADC being developed for liquid tumors and autoimmune diseases, while SMR-102 is a dual-payload ADC combining amanitin and a second payload for solid tumors.
The Company's operations will be organised around its amanitin-based ADC platform, with Simris Biologics serving as the primary development entity. The Company expects to onboard six additional team members with specialised ADC development expertise during the coming 12 months. The Company's existing microcystin-based ADC platform will continue to be developed in parallel. Simris will provide further updates on development milestones and financial guidance in connection with the next quarterly report and/or a forthcoming capital markets update.
“We believe amanitin represents one of the most promising opportunities for innovation in the ADC field today. Its differentiated mechanism of action, combined with the team's extensive experience in amanitin development and ADCs, provides a strong foundation for advancing new therapies designed to address treatment resistance. With SMR-101 and SMR-102, we are focusing our efforts on two programs with a clear path toward clinical proof of concept in both liquid and solid tumors,” commentsProfessor Andreas Pahl, Chief Executive Officer of Simris Biologics.
For more information, please contact:
Daniel Kubitza
Interim CEO of Simris Group AB
Tel: +33 6 71 04 21 52
Email: daniel.kubitza@simris.com
About Simris Group AB (PUBL):
Simris Group AB is developing antibody-drug conjugates based on clinically validated payload biology. The Company’s lead programs use amanitin payloads, established biological targets and complementary therapeutic approaches, targeting both liquid and solid tumors.
Simris Group's shares are traded on the Nasdaq First North Growth Market with the short name SIMRIS and ISIN code SE0008091664.
Certified Adviser is Amudova AB, telephone: 08-546 017 58, email: info@amudova.se.
This information is information that Simris Group is obliged to make public pursuant to the EU Market Abuse Regulation. The information was submitted for publication, through the agency of the contact persons set out above, at 2026-09-08 11:45 CEST.
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SIMRIS GROUP CONFIRMS STRATEGIC DIRECTION AND ADVANCES TWO AMANITIN-BASED ADC PROGRAMS TOWARD THE CLINIC
8 september, 11:45
Simris Group AB (publ) (“Simris” or the “Company”) confirms its strategy to develop amanitin-derived novel payloads to overcome treatment resistance in both liquid and solid tumors. Under strengthened specialist leadership, the Company will focus on advancing two proprietary Antibody-Drug Conjugate (“ADC”) programs into clinical development by late 2027 or early 2028.
On 19 March 2026, Simris announced that the Company was evaluating options to expand its ADC payload development program, including two strategic paths: continued focus on pre-clinical development of its microcystin-based ADC platform, or a more capital-intensive expansion involving the integration of an experienced ADC development team and a clinically validated payload class with the potential to accelerate the Company's path toward clinical development.
Following a thorough evaluation, the Company has confirmed its strategic direction to advance its ADC development activities, with an increased focus on accelerating amanitin-based ADC programs toward the clinic. This decision reflects the board of directors' assessment that Simris is well positioned to build on the work already undertaken and to advance its programs more rapidly toward clinical proof of concept under the leadership of Professor Andreas Pahl and the newly strengthened development team.
Simultaneously, the Company will continue with the previously announced ongoing Microcystin-ADC studies designed to generate in vivo safety and efficacy data for candidate microcystin payloads.
Treatment resistance remains a fundamental challenge in cancer. The next wave of ADC innovation will require differentiated payloads, such as amanitin, with novel mechanisms capable of addressing cancers that no longer respond to existing therapies. The Company's strategy combines clinically supported and de-risked amanitin biology, established oncology targets and an experienced ADC development team.
Execution of the strategy will be led by Professor Andreas Pahl, newly appointed Chief Executive Officer of Simris Biologics, supported by a strengthened development team with extensive experience in amanitin and ADC development spanning payload development, manufacturing, regulatory strategy, and clinical development.
Amanitin inhibits RNA polymerase II, offering a differentiated mechanism of action from the payload classes that currently dominate the ADC field. Simris will initially focus on two proprietary amanitin-based ADC programs, SMR-101 and SMR-102. SMR-101 is a B-cell depleting amanitin-based ADC being developed for liquid tumors and autoimmune diseases, while SMR-102 is a dual-payload ADC combining amanitin and a second payload for solid tumors.
The Company's operations will be organised around its amanitin-based ADC platform, with Simris Biologics serving as the primary development entity. The Company expects to onboard six additional team members with specialised ADC development expertise during the coming 12 months. The Company's existing microcystin-based ADC platform will continue to be developed in parallel. Simris will provide further updates on development milestones and financial guidance in connection with the next quarterly report and/or a forthcoming capital markets update.
“We believe amanitin represents one of the most promising opportunities for innovation in the ADC field today. Its differentiated mechanism of action, combined with the team's extensive experience in amanitin development and ADCs, provides a strong foundation for advancing new therapies designed to address treatment resistance. With SMR-101 and SMR-102, we are focusing our efforts on two programs with a clear path toward clinical proof of concept in both liquid and solid tumors,” commentsProfessor Andreas Pahl, Chief Executive Officer of Simris Biologics.
For more information, please contact:
Daniel Kubitza
Interim CEO of Simris Group AB
Tel: +33 6 71 04 21 52
Email: daniel.kubitza@simris.com
About Simris Group AB (PUBL):
Simris Group AB is developing antibody-drug conjugates based on clinically validated payload biology. The Company’s lead programs use amanitin payloads, established biological targets and complementary therapeutic approaches, targeting both liquid and solid tumors.
Simris Group's shares are traded on the Nasdaq First North Growth Market with the short name SIMRIS and ISIN code SE0008091664.
Certified Adviser is Amudova AB, telephone: 08-546 017 58, email: info@amudova.se.
This information is information that Simris Group is obliged to make public pursuant to the EU Market Abuse Regulation. The information was submitted for publication, through the agency of the contact persons set out above, at 2026-09-08 11:45 CEST.
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