Kalle Malmberg group - Natural Killer Cell Biology and Cell Therapy

The group studies the molecular and cellular basis for NK cell differentiation and repertoire formation in health and disease.


NK cells, killer cell immunoglobulin-like receptors, KIR, allogeneic hematopoietic stem cell transplantation, immunotherapy, cell therapy.

Summary of research

The Malmberg lab focuses on understanding the cellular and molecular mechanisms underlying the formation and diversification of human NK cell repertories. A central aspect of these studies is to examine the dynamic shaping of NK cell function by killer cell immunoglobulin-like receptors (KIR). We are using a wide range of single cell technologies and imaging tools to study the genetic regulatory circuits involved in shaping the interior of the NK cell, with a primary focus is on lysosomal signaling. 

In more translational efforts, we seek to develop an off-the-shelf NK cell therapy platform and implement new insights into NK cell biology in clinical trials for patients with advanced cancer. The research group is based at the Oslo University Hospital and Karolinska Institutet.


In a film produced by Cancerfonden, Professor Kalle Malmberg talks about the group's research and explains how it is possible to teach the immune system to take on cancer cells (in Swedish).

Interview with Kalle Malmberg about Immunotherapy

Selected publications and Twitter

Group leader

Karl-Johan Malmberg

Professor, Principal Investigator
H7 Department of Medicine, Huddinge

Karl-Johan Malmberg is a specialist in Hematology and currently holds a position as Professor of Immunology at the University of Oslo, Norway. He is a Visiting Professor in Cell-Based Cancer Immunotherapy at Karolinska Institutet.

Karl-Johan Malmberg is Co-Director of the Department of Cancer immunology, Institute for cancer Research, Oslo University Hospital (OUH).

Since 2019 he leads StratCell, a strategic research program at the OUH. Karl-Johan is also the Co-Director of the competence center in NK cell therapy (funded by Vinnova), which is located at the Department of Medicine, Huddinge.

He received his M.D (2000) and PhD (2003) from Karolinska Institutet.

Karolinska Institutet team

Karl-Johan Malmberg

Professor, Principal Investigator
H7 Department of Medicine, Huddinge

Ebba Sohlberg

PhD, Project Manager
H7 Department of Medicine, Huddinge

Ebba Sohlberg completed her PhD at Stockholm University in 2013 on the neonatal innate immune system and herpesviruses. After a post-doc in the Malmberg group, she is now a project manager doing research and supervising students.

She is also continuing to work towards clinical development of NK cell therapies, in collaboration with the Karolinska University hospital, GMP facilities and companies.

When not at work, Ebba enjoys going to museums, concerts and socializing.

Quirin Hammer

PhD, Postdoctoral fellow, Team leader
H7 Department of Medicine, Huddinge

Quirin Hammer is leading a team in the Kalle Malmberg group, that investigates molecular mechanisms that regulate innate immune cell responses. His work focuses on developing next-generation NK cell immunotherapy against cancer.

Quirin completed his PhD at the German Rheumatism Research Centre and the Humboldt University of Berlin in 2018. During his PhD, he studied host-pathogen interactions between human natural killer cells and cytomegalovirus.

When not at work, Quirin enjoys learning chess, having coffee, and socializing.

Pilar Maria Lanuza

Postdoctoral researcher
H7 Department of Medicine, Huddinge

Pilar Lanuza Morte is postdoc in the Kalle Malmberg group. Her work focuses on NK cell tuning to develop new strategies for NK cell-based immunotherapy.

Pilar completed her PhD at the University of Zaragoza in 2020. During her PhD, she aimed at improving NK cell immunotherapy against solid tumours with drug resistance mutations.

When not at work, Pilar enjoys nature activities, music and reading.

Aline Pfefferle

Postdoctoral fellow
H7 Department of Medicine, Huddinge

Aline Pfefferle completed her PhD at the Karolinska Institutet in 2019. During her PhD, she studied the dynamics of NK cell homeostasis and its implications for cell-based cancer immunotherapy.

After a joined postdoc/senior scientist position in Nick Huntington’s group/oNKo-innate in Melbourne, Australia, she is now continuing her work in the group, focusing on NK cell tuning in the tumor microenvironment.

When not at work, Aline enjoys exploring the outdoors, cycling, climbing, gardening and reading.

H7 Department of Medicine, Huddinge

Alvaro Haroun-Izquierdo's work in the Kalle Malmberg group focuses on understanding basic principles governing NK cell cytotoxicity. The specific goal of his research is applying this knowledge to NK-cell immunotherapy approaches.

Alvaro obtained his Masters degree in Genetics from the University of Glasgow, UK in 2016.

In his free-time he enjoys cooking, reading and downhill skiing.

Pouria Momayyezi is currently a resident in Hematology at the Karolinska University hospital. He received his medical degree from Karolinska Institutet in 2015.

Pouria's PhD studies concern next-generation NK-cell immunotherapy, specifically prolonging the survival of transferred NK cells in patients receiving immunotherapy.

In his spare time, he enjoys cooking, reading, watching football and experiencing different forms of art, preferably with friends and family.

Affiliated Scientists

H7 Department of Medicine, Huddinge

Andreas Björklund is specialist in Hematology and Internal medicine, working at the Unit for cell therapy and allogeneic stem cell transplantation (CAST) at the Karolinska University hospital.

During his PhD he focused on NK cell maturation and education after allogeneic stem cell transplantation and the impact on relapse risk, infections and GVHD. He was the clinical PI of the Kalle Malmberg group’s first NK cell therapy trial. Andreas is now preparing the coming study using adaptive NK cells against chemorefractory AML and MDS.

Andreas is also interested in understanding the regulatory immune environment and the tumor immune niche in relation to different adoptive cell therapies.

H9 Department of Clinical Science, Intervention and Technology

Marie Schaffer is Co-director for the HLA lab at the Clinical Immunology dept. Karolinska University Hospital. Since many years Marie is working at the Clinical Immunology department, where she has the technical responsibility for all HLA-typings related to transplantation.

Marie completed her PhD at Karolinska Institutet in 2006. The subject was on HLA and KIR polymorphism in hematopoietic stem cell transplantation.

When not at work, Marie enjoys several cultural activities such as singing in choir, reading, watching films and exhibitions.

OUS team

Project Manager

  • Lise Kveberg

Lab managers

  • Hanne Julie Hoel
  • Merete Thune Wiiger

Senior engineer

  • Silje Zandstra Krokeide

Postdoctoral fellows

  • Edina Szabo
  • Lamberto Torralba-Raga

Immune informatics and computational biology

  • Herman Netskar

Ph.D. Candidates

  • Camille Philippon
  • Marianna Vincenti
  • Thorstein Boxaspen
  • Karen Martin

Master students

  • Alonso Sanchez
Malmberg group

Open positions

We always want to get in touch with highly motivated students and potential postdocs. If you are interested in doing research within our group, please contact the Group leader

Previous lab members

  • Sandra Anderson
  • Bettina Baumann
  • Axel Berg-Larsen
  • Vivien Beziat
  • Mattias Carlsten
  • Kishan Kumar Chudasama
  • Monika Enqvist
  • Cyril Fauriat
  • Jodie Peter Goodridge
  • Benedikt Jakobs
  • Lisa Liu
  • Vincent Oei Yi Sheng
  • Astrid Tschan Plessl
  • Veronika Kremer
  • Aline Pfefferle
  • Shuo-Li
  • Oisin Huhn
  • Petra Balbi
  • Minoru Kanaya
  • Mizuha Kosugi-Kanaya
  • Artur Cieslar-Pobuda
  • Rakesh Kumar
  • Dennis Clement
  • Eivind Heggernes Ask
  • Daniel Alfredo Palacios Orellana
  • Michelle Lu Sætersmoen

Financial support A-Z

  • ALF
  • Barncancerfonden
  • Cancerfonden
  • EU Horizon 2020
  • Fate Therapeutics
  • KAW
  • Merck
  • SSF
  • Vetenskapsrådet
  • Vinnova
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