Johan Sieborg

Postdoc

Education

MSc in Physics, Ph.D.

Work areas

Research

Telephone

+45 21304869

Johan.sieborg@regionh.dk

Orcid ID

0000-0002-8221-4760

vCard

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Links

LinkedIn Profile

Current workplace

Bispebjerg Hospital
Department of Dermatology
Nielsine Nielsens Vej 17, opg. 9
2400 København NV
Denmark

Current research

My PhD project is focusing on research in non-melanoma skin cancer (NMSC), where I work with registry data to determine the epidemiology, treatment patterns and outcome of patients with NMSC.

Main interests

Non-melanoma skin cancer
Epidemiology
Register data

Publications and releases

Article

2026

Machine-learning-based Phenomapping of Patients with Keratinocyte Carcinoma: Data-driven Subgrouping by Disease Burden, Comorbidities and Socioeconomic Status

Sieborg J, Wenande E, Nielsen ML, Nielsen M, Thein D, Haedersdal M. Acta Derm Venereol. 2026 Aug 13;106.

Article

2026

Recurrence of Basal Cell Carcinoma across Different Treatment Modalities: A Nationwide Study with 8 Years of Follow-up and Modelled Prediction

Sieborg J, Wenande E, Egeberg A, Sølvsten H, Lei U, Kjeldsen EW, Haedersdal M. Acta Derm Venereol. 2026 Jul 9;106:0064.

Article

2026

Long-term Recurrence after Curettage ± Electrodesiccation for Basal Cell Carcinoma: A Nationwide Cohort Study of 47,358 Tumours from Dermatology Practices

Kjeldsen EW, Kjær SK, Sieborg J, Sølvsten H, Hædersdal M.. Acta Derm Venereol. 2026 Jun 2;106:0079.

Article

2026

Psychological distress and unmet supportive care needs in melanoma survivors and patients at high risk of developing melanoma: a Swiss cross-sectional study

Sieborg J, Zwahlen D, Maul JT, Hædersdal M, Kjeldsen EW, Cerminara S, Goessinger EV, Egeberg A, Mangana J, Navarini A, Maul LV. Br J Dermatol. 2026 Feb 18;194(3):499-508.

Article

2025

Margin Status following Simple Excision of Head and Neck Basal Cell Carcinoma: A Population-Based, Cross-Sectional Study of 9,291 Excisions.

Tabatabai MK, Sieborg J, Karmisholt KE, Mårtensson NL, Schmidt G, Wenande E, Haedersdal M. Acta Derm Venereol. 2025 Oct 28;105:adv44224.

PhD thesis

2026

Epidemiological Insights into Keratinocyte Carcinoma: From Incidence to Clinical Outcomes

Johan Sieborg, Bispebjerg Hospital, Department of Dermatology, University of Copenhagen, Graduate Scool of Health and Medical Services

Article

2025

Impact of socioeconomic status and distance to dermatological clinic on the disease burden of keratinocyte carcinoma and precursors in Danish office-based dermatological practice

Sieborg J, Haedersdal M, Lei U, Sølvsten H, Olesen AB, Vinding GR, Lamberg AL, Egeberg A, Wenande E. Clin Exp Dermatol. 2025 Sep 25;50(10):2007-2015.

Article

2025

Head and neck basal cell carcinoma excisions across specialities in hospital and practice settings

Kjeldsen EW, Sieborg J, Tabatabai MK, Karmisholt KE, Mårtensson NL, Schmidt G, Wenande E, Haedersdal M. Dan Med J. 2025 Jun 21;72(7):A01250029.

Article

2024

Incidence and geographic differences in keratinocyte carcinoma and Bowen's disease in office-based dermatological practice between 2013 and 2022: A nationwide Danish registry-based study

Sieborg, J, Haedersdal, M, Lei, U, Sølvsten, H, Braae Olesen, A, Vinding, GR, Lamberg, AL, Egeberg, A, Wenande, E. Journal of the European Academy of Dermatology and Venereology. 2024. https://doi.org/10.1002/jvc2.478

Johan Sieborg

Main interests

Publications and releases

Machine-learning-based Phenomapping of Patients with Keratinocyte Carcinoma: Data-driven Subgrouping by Disease Burden, Comorbidities and Socioeconomic Status

Recurrence of Basal Cell Carcinoma across Different Treatment Modalities: A Nationwide Study with 8 Years of Follow-up and Modelled Prediction

Long-term Recurrence after Curettage ± Electrodesiccation for Basal Cell Carcinoma: A Nationwide Cohort Study of 47,358 Tumours from Dermatology Practices

Psychological distress and unmet supportive care needs in melanoma survivors and patients at high risk of developing melanoma: a Swiss cross-sectional study

Margin Status following Simple Excision of Head and Neck Basal Cell Carcinoma: A Population-Based, Cross-Sectional Study of 9,291 Excisions.

Epidemiological Insights into Keratinocyte Carcinoma: From Incidence to Clinical Outcomes

Impact of socioeconomic status and distance to dermatological clinic on the disease burden of keratinocyte carcinoma and precursors in Danish office-based dermatological practice

Head and neck basal cell carcinoma excisions across specialities in hospital and practice settings

Incidence and geographic differences in keratinocyte carcinoma and Bowen's disease in office-based dermatological practice between 2013 and 2022: A nationwide Danish registry-based study

Emilie Westerlin Kjeldsen

Jonatan Riber Granborg

Emily Wenande

Lauritz Falkow Brorsen

Johan Sieborg

Main interests

Publications and releases

Machine-learning-based Phenomapping of Patients with Keratinocyte Carcinoma: Data-driven Subgrouping by Disease Burden, Comorbidities and Socioeconomic Status

Recurrence of Basal Cell Carcinoma across Different Treatment Modalities: A Nationwide Study with 8 Years of Follow-up and Modelled Prediction

Long-term Recurrence after Curettage ± Electrodesiccation for Basal Cell Carcinoma: A Nationwide Cohort Study of 47,358 Tumours from Dermatology Practices

Psychological distress and unmet supportive care needs in melanoma survivors and patients at high risk of developing melanoma: a Swiss cross-sectional study

Margin Status following Simple Excision of Head and Neck Basal Cell Carcinoma: A Population-Based, Cross-Sectional Study of 9,291 Excisions.

Epidemiological Insights into Keratinocyte Carcinoma: From Incidence to Clinical Outcomes

Impact of socioeconomic status and distance to dermatological clinic on the disease burden of keratinocyte carcinoma and precursors in Danish office-based dermatological practice

Head and neck basal cell carcinoma excisions across specialities in hospital and practice settings

Incidence and geographic differences in keratinocyte carcinoma and Bowen's disease in office-based dermatological practice between 2013 and 2022: A nationwide Danish registry-based study

Related employees

Emilie Westerlin Kjeldsen

Jonatan Riber Granborg

Emily Wenande

Lauritz Falkow Brorsen