Irma Fredriksson

Publications
CV
Public outreach and news

Articles

Article: INTERNATIONAL JOURNAL OF CANCER. 2026;159(1):101-110
Age-specific breast cancer incidence by subtype, TNM stage and screening status in Sweden 2008-2019 estimated with multiple imputation
Gkekos L; Gunnarsdottir KA; Humphreys K; Fredriksson I; Johansson ALV
Article: NPJ BREAST CANCER. 2026;12(1):49
Trimester of diagnosis affects tumor characteristics and survival in breast cancer during pregnancy: first results from the STURGATE collaboration
Bakhuis CFJ; Gkekos L; Van Diest PJ; Van Der Wall E; Fredriksson I; Van Dooijeweert C; Johansson ALV
Article: BREAST. 2026;85:104646
Breaking down the costs for breast cancer: Insights from Sweden's national quality register
Du X; Gkekos L; Rai B; Johansson ALV; Fredriksson I; Rantalainen M; Heintz E; Hao S; Clements M
Article: GYNECOLOGIC ONCOLOGY. 2026;204:44-51
Obstetric and perinatal outcomes following a diagnosis of gynecologic cancer during pregnancy
Shi Y; Gkekos L; Rodriguez-Wallberg KA; Fredriksson I; Frodin M; Lundberg FE; Johansson ALV
Article: EJSO. 2025;51(12):110484
Local management of second breast cancer event after primary breast conserving therapy: The patient's perspective
Hannoun-Levi J-M; Margenthaler J; Anderson B; Di Micco R; Arthur D; Aznar M; Berry MP; Brown T; Burke E; De Boniface J; Dietz J; Dodwell D; Fredriksson I; Gentilini OD; Guix B; Gutierrez C; Haidinger R; Heditsian D; Kothari A; Lestage B; Lyons J; Mclean YF; Mackenzie M; Meattini I; Montero-Luis A; Mourtada F; Nguyen T; Petitti L; Polgar C; Poortmans P; Rocco N; Sackey H; Sarantou T; Showalter S; Strnad V; Kuehn T; Volders J; Peeters M-JV; Yashar C; Rubio IT; Gahm J; Zeidan Y; Kaidar-Person O; Dirbas FM
Article: BREAST CANCER RESEARCH. 2025;27(1):213
Pathological response to pembrolizumab-based neoadjuvant therapy in ER-low vs. ER-zero breast cancer: a Swedish population-based cohort study
Steen S; Karlsson E; Bjornheden I; Rask G; Thurfjell V; Nobin H; Kolodziej B; Boden A; Bauer A; Einefors R; Nilsson P; Zerdes I; Papakonstantinou A; Foukakis T; Fredriksson I; Rantalainen M; Colon-Cervantes E; Kovacs A; Acs B; Hartman J
Article: BJS-BRITISH JOURNAL OF SURGERY. 2025;112(12):znaf233
Major systemic infection following breast cancer surgery and oncological outcomes
Adwall L; Fredriksson I; Hultin H; Stalberg P; Mani M; Norlen O; Sackey H
Article: BIOMEDICINES. 2025;13(12):2897
Variation in Pathological Appearance Across Repeated Sampling from Probably Benign Breast Lesions
Zouzos A; Fredriksson I; Foukakis T; Hartman J; Strand F
Article: EUROPEAN JOURNAL OF RADIOLOGY. 2025;186:112062
Patient experience and healthcare cost aspects of vacuum-assisted excision of breast lesions. A report from the Swedish VAE randomized clinical trial
Zouzos A; Fredriksson I; Karakatsanis A; Foukakis T; Strand F
Article: JOURNAL OF GERIATRIC ONCOLOGY. 2025;16(3):102220
Short-term mortality in older (≥70 years) patients with early breast cancer treated with neo-/adjuvant chemotherapy: A Swedish nationwide retrospective population-based study
Lundgren C; Engvall K; Fredriksson I; Valachis A
Article: EUROPEAN JOURNAL OF RADIOLOGY. 2025;183:111895
Effect of needle size on outcomes of vacuum-assisted excision of breast lesions. A randomized controlled trial
Zouzos A; Fredriksson I; Karakatsanis A; Aristokleous I; Foukakis T; Strand F
Article: BJS OPEN. 2024;8(6):zrae137
Postoperative complications after breast cancer surgery and effect on recurrence and survival: population-based cohort study
Adwall L; Fredriksson I; Hultin H; Mani M; Norlen O
Article: BREAST CANCER RESEARCH AND TREATMENT. 2024;207(2):293-299
Use of beta-blockers in patients with ductal carcinoma in situ and risk of invasive breast cancer recurrence: a Swedish retrospective cohort study
Strell C; Smith DR; Valachis A; Woldeyesus H; Wadsten C; Micke P; Fredriksson I; Schiza A
Article: NATURE MEDICINE. 2024;30(9):2623-2630
AI-based selection of individuals for supplemental MRI in population-based breast cancer screening: the randomized ScreenTrustMRI trial
Salim M; Liu Y; Sorkhei M; Ntoula D; Foukakis T; Fredriksson I; Wang Y; Eklund M; Azizpour H; Smith K; Strand F
Article: LANCET REGIONAL HEALTH-EUROPE. 2024;40:100886
Real-world overall survival and characteristics of patients with ER-zero and ER-low HER2-negative breast cancer treated as triple-negative breast cancer: a Swedish population-based cohort study
Acs B; Hartman J; Sonmez D; Lindman H; Johansson ALV; Fredriksson I
Article: ACTA OBSTETRICIA ET GYNECOLOGICA SCANDINAVICA. 2024;103(4):684-694
Risk of obstetric and perinatal complications in women presenting with breast cancer during pregnancy and the first year postpartum in Sweden 1973-2017: A population-based matched study
Lundberg FE; Gkekos L; Rodriguez-Wallberg KA; Fredriksson I; Johansson ALV
Article: ACTA OBSTETRICIA ET GYNECOLOGICA SCANDINAVICA. 2024;103(4):669-683
Risk factors for the increasing incidence of pregnancy-associated cancer in Sweden - a population-based study
Lundberg FE; Stensheim H; Ullenhag GJ; Sahlgren HM; Lindemann K; Fredriksson I; Johansson ALV
Article: ESMO OPEN. 2024;9(4):102972
Worse histopathology and prognosis in women with breast cancer diagnosed during the second trimester of pregnancy
Gkekos L; Lundberg FE; Humphreys K; Fredriksson I; Johansson ALV
Article: HUMAN REPRODUCTION OPEN. 2024;2024(2):hoae027
Obstetric and perinatal outcomes in women with previous breast cancer: a nationwide study of singleton births 1973-2017
Gkekos L; Johansson ALV; Rodriguez-Wallberg KA; Fredriksson I; Lundberg FE
Article: BREAST CANCER RESEARCH. 2024;26(1):24
Prognostic impact of HER2 biomarker levels in trastuzumab-treated early HER2-positive breast cancer
Ronnlund C; Sifakis EG; Schagerholm C; Yang Q; Karlsson E; Chen X; Foukakis T; Weidler J; Bates M; Fredriksson I; Robertson S; Hartman J
Show more

All other publications

Review: ESMO REAL WORLD DATA AND DIGITAL ONCOLOGY. 2025;9:100176
Benchmarking cancer outcomes in Europe: a scoping review of methodologies and case-mix adjustments
Thurell J; Doppelbauer L; Verheul EM; Petrov I; Karsten MM; Koppert LB; Bergh J; Fredriksson I; Lindgren P; Kiani N; Hedayati E
Corrigendum: ESMO OPEN. 2024;9(5):103462
Worse histopathology and prognosis in women with breast cancer diagnosed during the second trimester of pregnancy (vol 9, 102972, 2024)
Gkekos L; Lundberg FE; Humphreys K; Fredriksson I; Johansson ALV
Review: ONCOLOGIST. 2024;29(1):1-7
Impact of Primary Breast Surgery on Overall Survival of Patients With De Novo Metastatic Breast Cancer: A Systematic Review and Meta-Analysis
Villacampa G; Papakonstantinou A; Fredriksson I; Matikas A
Doctoral thesis: 2002
Local recurrence after breast conserving surgery in breast cancer
Fredriksson I

Employments

Affiliated to Research, Department of Molecular Medicine and Surgery, Karolinska Institutet, 2024-2027

Degrees and Education

Doctor Of Philosophy, Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, 2002
University Medical Degree, Karolinska Institutet, 1991

Supervision

Supervision to doctoral degree
- Margot Hofman, 2026-

Articles

All other publications

Employments

Degrees and Education

Supervision

Supervision to doctoral degree

News from KI

Events from KI