Researcher profile · Semantic Scholar

H. Ohnstad

h-index: 12
Works: 26
Citations: 822

Most-cited papers

An independent poor-prognosis subtype of breast cancer defined by a distinct tumor immune microenvironment
X. Tekpli, T. Lien, A. Røssevold, D. Nebdal +15 more
2019Nature Communications167 citations Open access
Semantic Scholar
Prognostic value of PAM50 and risk of recurrence score in patients with early-stage breast cancer with long-term follow-up
H. Ohnstad, E. Borgen, R. Falk, T. Lien +10 more
2017Breast Cancer Research123 citations Open access
Semantic Scholar
Array comparative genomic hybridization reveals distinct DNA copy number differences between gastrointestinal stromal tumors and leiomyosarcomas.
L. Meza-Zepeda, Stine H. Kresse, Ana H. Barragan-Polania, B. Bjerkehagen +5 more
2006Cancer Research105 citations Open access
Semantic Scholar
LSAMP, a novel candidate tumor suppressor gene in human osteosarcomas, identified by array comparative genomic hybridization
Stine H. Kresse, H. Ohnstad, Erik B. Paulsen, B. Bjerkehagen +5 more
2009Genes, Chromosomes and Cancer94 citations
Semantic Scholar
MDM2 antagonist Nutlin-3a potentiates antitumour activity of cytotoxic drugs in sarcoma cell lines
H. Ohnstad, Erik B. Paulsen, P. Noordhuis, M. Berg +3 more
2011BMC Cancer78 citations Open access
Semantic Scholar
DNA copy number changes in high-grade malignant peripheral nerve sheath tumors by array CGH
Stine H. Kresse, Magne Skårn, H. Ohnstad, H. M. Namløs +3 more
2008Molecular Cancer50 citations Open access
Semantic Scholar
Correlation of TP53 and MDM2 genotypes with response to therapy in sarcoma
H. Ohnstad, R. Castro, Jinchang Sun, Karen-Marie Heintz +5 more
2013Cancer47 citations
Semantic Scholar
Comprehensive multi-omics analysis of breast cancer reveals distinct long-term prognostic subtypes
Abhibhav Sharma, Julia Debik, B. Naume, H. Ohnstad +21 more
2024Oncogenesis42 citations Open access
Semantic Scholar
First-line ribociclib (RIB) + letrozole (LET) in hormone receptor-positive (HR+), HER2-negative (HER2–) advanced breast cancer (ABC): MONALEESA-2 biomarker analyses.
G. Hortobagyi, S. Paluch-Shimon, K. Petráková, C. Villanueva +13 more
201818 citations
Semantic Scholar
DNA Copy Number Changes in Human Malignant Fibrous Histiocytomas by Array Comparative Genomic Hybridisation
Stine H. Kresse, H. Ohnstad, B. Bjerkehagen, O. Myklebost +1 more
2010PLoS ONE18 citations Open access
Semantic Scholar
Response to preoperative chemotherapy in patients undergoing resection of pulmonary metastasis from soft tissue sarcoma – a predictor of outcome?
H. Ohnstad, Ø. Bruland, I. Taksdal, B. Bjerkehagen +4 more
2014Acta oncologica17 citations Open access
Semantic Scholar
Establishment and characterization of a human gastrointestinal stromal tumour (GIST) xenograft in athymic nude mice.
M. Revheim, T. Seierstad, J. Berner, O. Bruland +4 more
2009Anticancer Research13 citations
Semantic Scholar
Optima: Optimal personalised treatment of early breast cancer using multi-parameter analysis, an international randomized trial of tumor gene expression test-directed chemotherapy treatment in a largely node-positive population.
R. Stein, A. Makris, I. Macpherson, L. Hughes-Davies +15 more
202112 citations
Semantic Scholar
Impact of Prosigna test on adjuvant treatment decision in lymph node-negative early breast cancer—a prospective national multicentre study (EMIT-1)
H. Ohnstad, E. Blix, L. Akslen, B. Gilje +41 more
2024ESMO Open11 citations Open access
Semantic Scholar
Sample Preparation Approach Influences PAM50 Risk of Recurrence Score in Early Breast Cancer
T. Lien, H. Ohnstad, O. Lingjærde, J. Vallon-Christersson +9 more
2021Cancers11 citations Open access
Semantic Scholar
[Cancer pain in hospitalized patients].
A. Holtan, U. Kongsgaard, H. Ohnstad
2005Tidsskrift for Den Norske Laegeforening6 citations
Semantic Scholar
Smerter hos kreftpasienter innlagt i sykehus
Anders Holtan, Ulf E. Kongsgaard, H. Ohnstad
20055 citations
Semantic Scholar
Abstract OT3-32-01: OPTIMA, a prospective randomized trial to validate the clinical utility and cost-effectiveness of gene expression test-directed chemotherapy decisions in high clinical risk early breast cancer
R. Stein, A. Makris, I. Macpherson, L. Hughes-Davies +19 more
2023Cancer Research3 citations
Semantic Scholar
Cost-effectiveness of Prosigna for Adjuvant Treatment Decisions in Early Breast Cancer: Healthcare Sector and Societal Perspectives.
L. Asphaug, L. Akslen, E. Blix, Beate Boge +24 more
2025Clinical Breast Cancer2 citations Open access
Semantic Scholar
103P Impact of Prosigna test on treatment decision in lymph node-negative early breast cancer: A prospective multicenter study (EMIT1)
H. Ohnstad, E. Borgen, E. Mortensen, M. Brekke +16 more
2023ESMO Open1 citations Open access
Semantic Scholar
Prognostic value of PAM50 and risk of recurrence score in patients with early-stage breast cancer with long-term follow-up
H. Ohnstad, E. Borgen, R. Falk, T. Lien +10 more
2017Breast Cancer Research1 citations Open access
Semantic Scholar
Correction: Lien et al. Sample Preparation Approach Influences PAM50 Risk of Recurrence Score in Early Breast Cancer. Cancers 2021, 13, 6118
T. Lien, H. Ohnstad, O. Lingjærde, J. Vallon-Christersson +8 more
2026Cancers0 citations Open access
Semantic Scholar
DNA-Based Biomarkers as Predictors of Carboplatin Response in Neoadjuvant Treatment for Hormone Receptor Positive and Triple-Negative Breast Cancer.
Arne V. Pladsen, M. L. Smebye, Øystein Garred, E. Borgen +19 more
2026Clinical Cancer Research0 citations
Semantic Scholar
Bridging and analytical validation of the Prosigna(R) Breast Risk of Recurrence Test as a whole-transcriptome NGS lab developed test
D. Zhang, Y. Wang, L. Sager, R. Koenigsberg +12 more
2026medRxiv0 citations Open access
Semantic Scholar
Abstract P2-05-16: Establishment of molecular profiling for individual treatment decisions in early breast cancer – Clinical impact of PAM50 and PAM50 risk of recurrence score after more than 16 years follow up
B. Naume, E. Borgen, R. Falk, H. Ohnstad +10 more
20170 citations
Semantic Scholar
Genomic, mRNA and miRNA profiling of malignant peripheral nerve sheath tumors
L. Meza-Zepeda, Stine H. Kresse, H. Ohnstad, Magne Skårn +2 more
20070 citations
Semantic Scholar

O. Myklebost

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