Karina Dahl Steffensen

Dr. Karina Dahl Steffensen

orcid

Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 December 2019 in New England Journal of Medicine
Verified
Journal Article
Open access
PDF file
RCRobert L. Coleman
Robert L. Coleman
GFGini F. Fleming
Gini F. Fleming
MBMark F. Brady
Mark F. Brady
ESElizabeth M. Swisher
Elizabeth M. Swisher
KSKarina Dahl Steffensen
Karina Dahl Steffensen
MBMichael A. Bookman
Michael A. Bookman
Data are limited regarding the use of poly(adenosine diphosphate [ADP]–ribose) polymerase inhibitors, such as veliparib, in combination with chemotherapy followed by maintenance as initial treatment in patients with high-grade serous ovarian carcinoma. In an international, phase 3, placebo-controlled trial, we assessed the efficacy of veliparib added to first-line induction chemotherapy with carboplatin and paclitaxel and continued as maintenance monotherapy in patients with previously untreated stage III or IV high-grade serous ovarian carcinoma. Patients were randomly assigned in a 1:1:1 ratio to receive chemotherapy plus placebo followed by placebo maintenance (control), chemotherapy plus veliparib followed by placebo maintenance (veliparib combination only), or chemotherapy plus veliparib followed by veliparib maintenance (veliparib throughout). Cytoreductive surgery could be performed before initiation or after 3 cycles of trial treatment. Combination chemotherapy was 6 cycles, and maintenance therapy was 30 additional cycles. The primary end point was investigator-assessed progression-free survival in the veliparib-throughout group as compared with the control group, analyzed sequentially in the BRCA-mutation cohort, the cohort with homologous-recombination deficiency (HRD) (which included the BRCA-mutation cohort), and the intention-to-treat population. A total of 1140 patients underwent randomization. In the BRCA-mutation cohort, the median progression-free survival was 34.7 months in the veliparib-throughout group and 22.0 months in the control group (hazard ratio for progression or death, 0.44; 95% confidence interval [CI], 0.28 to 0.68; P<0.001); in the HRD cohort, it was 31.9 months and 20.5 months, respectively (hazard ratio, 0.57; 95 CI, 0.43 to 0.76; P<0.001); and in the intention-to-treat population, it was 23.5 months and 17.3 months (hazard ratio, 0.68; 95% CI, 0.56 to 0.83; P<0.001). Veliparib led to a higher incidence of anemia and thrombocytopenia when combined with chemotherapy as well as of nausea and fatigue overall. Across all trial populations, a regimen of carboplatin, paclitaxel, and veliparib induction therapy followed by veliparib maintenance therapy led to significantly longer progression-free survival than carboplatin plus paclitaxel induction therapy alone. The independent value of adding veliparib during induction therapy without veliparib maintenance was less clear. (Funded by AbbVie; VELIA/GOG-3005 ClinicalTrials.gov number, NCT02470585.)

1 January 2009 in Cell Cycle
Verified
Journal Article
Closed access
AAAyesha B. Alvero
Ayesha B. Alvero
RCRui Chen
Rui Chen
HFHan-Hsuan Fu
Han-Hsuan Fu
MMMichele Montagna
Michele Montagna
PSPeter E. Schwartz
Peter E. Schwartz
Gil MorGil Mor
Gil Mor
A major burden in the treatment of ovarian cancer is the high percentage of recurrence and chemoresistance. Cancer stem cells (CSCs) provide a reservoir of cells that can self-renew, can maintain t...

1 March 2018 in The Lancet Oncology
Verified
Journal Article
Closed access
JHJorine de Haan
Jorine de Haan
MVMagali Verheecke
Magali Verheecke
KCKristel Van Calsteren
Kristel Van Calsteren
BCBen Van Calster
Ben Van Calster
RSRoman G Shmakov
Roman G Shmakov
FAFrédéric Amant
Frédéric Amant

19 June 2021 in Medical Decision Making
Verified
Journal Article
Open access
PDF file
HWHolly O. Witteman
Holly O. Witteman
KMKristin G. Maki
Kristin G. Maki
GVGratianne Vaisson
Gratianne Vaisson
JFJeanette Finderup
Jeanette Finderup
KLKrystina B. Lewis
Krystina B. Lewis
RVRobert J. Volk
Robert J. Volk
The 2013 update of the evidence informing the quality dimensions behind the International Patient Decision Aid Standards (IPDAS) offered a model process for developers of patient decision aids. To summarize and update the evidence used to inform the systematic development of patient decision aids from the IPDAS Collaboration. To provide further details about design and development methods, we summarized findings from a subgroup (n = 283 patient decision aid projects) in a recent systematic review of user involvement by Vaisson et al. Using a new measure of user-centeredness (UCD-11), we then rated the degree of user-centeredness reported in 66 articles describing patient decision aid development and citing the 2013 IPDAS update on systematic development. We contacted the 66 articles’ authors to request their self-reports of UCD-11 items. The 283 development processes varied substantially from minimal iteration cycles to more complex processes, with multiple iterations, needs assessments, and extensive involvement of end users. We summarized minimal, medium, and maximal processes from the data. Authors of 54 of 66 articles (82%) provided self-reported UCD-11 ratings. Self-reported scores were significantly higher than reviewer ratings (reviewers: mean [SD] = 6.45 [3.10]; authors: mean [SD] = 9.62 [1.16], P < 0.001). Decision aid developers have embraced principles of user-centered design in the development of patient decision aids while also underreporting aspects of user involvement in publications about their tools. Templates may reduce the need for extensive development, and new approaches for rapid development of aids have been proposed when a more detailed approach is not feasible. We provide empirically derived benchmark processes and a reporting checklist to support developers in more fully describing their development processes.

7 January 2008 in Oncogene
Verified
Journal Article
Closed access
RCR Chen
R Chen
AAA B Alvero
A B Alvero
DSD-A Silasi
D-A Silasi
KSKarina Dahl Steffensen
Karina Dahl Steffensen
Gil MorGil Mor
Gil Mor

1 March 2014 in International Journal of Gynecological Cancer
Verified
Journal Article
Closed access
FAFrédéric Amant
Frédéric Amant
MHMichael J Halaska
Michael J Halaska
MFMonica Fumagalli
Monica Fumagalli
KSKarina Dahl Steffensen
Karina Dahl Steffensen
CLChristianne Lok
Christianne Lok
EPEsgo Task Force ‘Cancer In Pregnancy’
Esgo Task Force ‘Cancer In Pregnancy’