Gerrit-Jan Liefers

Gerrit-Jan Liefers

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Gerrit-Jan Liefers

Gerrit-Jan Liefers

Publications by authors named "Gerrit-Jan Liefers"

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Effectiveness of radiotherapy after breast-conserving surgery in older patients with T1-2N0 breast cancer.

Breast Cancer Res Treat 2019 Dec 26;178(3):637-645. Epub 2019 Aug 26.

Department of Surgery, Leiden University Medical Center, Location J10-71, Postzone K6-R, P.O. Box 9600, 2300 RC, Leiden, The Netherlands.

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http://dx.doi.org/10.1007/s10549-019-05412-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6817758PMC
December 2019

Role of patient preferences in clinical practice guidelines: a multiple methods study using guidelines from oncology as a case.

BMJ Open 2019 Dec 5;9(12):e032483. Epub 2019 Dec 5.

Medical Decision Making, Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands

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http://dx.doi.org/10.1136/bmjopen-2019-032483DOI Listing
December 2019

Improved survival of older patients with advanced breast cancer due to an increase in systemic treatments: a population-based study.

Breast Cancer Res Treat 2019 Nov 19;178(1):141-149. Epub 2019 Jul 19.

Department of Medical Oncology, Leiden University Medical Center, P.O. Box 9600, 2300 RC, Leiden, The Netherlands.

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http://dx.doi.org/10.1007/s10549-019-05356-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6790206PMC
November 2019

Women's Acceptance of Overdetection in Breast Cancer Screening: Can We Assess Harm-Benefit Tradeoffs?

Med Decis Making 2019 Nov 13:272989X19886886. Epub 2019 Nov 13.

Wiser Healthcare, Sydney School of Public Health, University of Sydney, New South Wales, Australia.

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http://dx.doi.org/10.1177/0272989X19886886DOI Listing
November 2019

Treatment strategies and survival outcomes in older women with breast cancer: A comparative study between the FOCUS cohort and Nottingham cohort.

J Geriatr Oncol 2018 11 18;9(6):635-641. Epub 2018 May 18.

Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands; Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

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https://linkinghub.elsevier.com/retrieve/pii/S18794068173028
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http://dx.doi.org/10.1016/j.jgo.2018.05.004DOI Listing
November 2018

Preferred and Perceived Participation of Younger and Older Patients in Decision Making About Treatment for Early Breast Cancer: A Prospective Study.

Clin Breast Cancer 2018 04 28;18(2):e245-e253. Epub 2017 Nov 28.

Department of Medical Decision Making, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.clbc.2017.11.013DOI Listing
April 2018

A prospective comparison of younger and older patients' preferences for breast-conserving surgery versus mastectomy in early breast cancer.

J Geriatr Oncol 2018 03 12;9(2):170-173. Epub 2017 Sep 12.

Department of Medical Decision Making, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.jgo.2017.08.011DOI Listing
March 2018

Optimal Duration of Extended Adjuvant Endocrine Therapy for Early Breast Cancer; Results of the IDEAL Trial (BOOG 2006-05).

J Natl Cancer Inst 2018 01;110(1)

Departments of Surgery, Medical Oncology, and Medical Statistics, Leiden University Medical Center, Leiden, Netherlands; Department of Internal Medicine, Albert Schweitzer Hospital, Dordrecht, the Netherlands; Department of Internal Medicine, Reinier de Graaff Hospital, Delft, the Netherlands; Dutch Breast Cancer Research Group, Amsterdam, the Netherlands; Department of Surgery, Netherlands Cancer Institute, Amsterdam, the Netherlands.

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https://academic.oup.com/jnci/article/110/1/40/4093022
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http://dx.doi.org/10.1093/jnci/djx134DOI Listing
January 2018

[After surgery or thanks to surgery?].

Ned Tijdschr Geneeskd 2016 ;160:D205

Leids Universitair Medisch Centrum, afd. Heelkunde, Leiden.

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October 2017

Clinical Relevance of a Grading System for Anastomotic Leakage After Low Anterior Resection: Analysis From a National Cohort Database.

Dis Colon Rectum 2017 Jul;60(7):706-713

1 Department of Surgical Oncology, Leiden University Medical Center, Leiden, the Netherlands 2 Dutch Surgical Colorectal Audit, Dutch Institute for Clinical Auditing, Leiden University Medical Center, Leiden, the Netherlands 3 Department of Surgery, Alrijne Hospital, Leiderdorp, the Netherlands 4 Department of Surgery, Erasmus Medical Center, Rotterdam, the Netherlands.

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http://dx.doi.org/10.1097/DCR.0000000000000800DOI Listing
July 2017

The mortality reducing effect of aspirin in colorectal cancer patients: Interpreting the evidence.

Cancer Treat Rev 2017 Apr 20;55:120-127. Epub 2017 Feb 20.

Department of Surgical Oncology, Leiden University Medical Center, P.O. Box 9600, 2300 RC, The Netherlands.

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http://dx.doi.org/10.1016/j.ctrv.2016.12.008DOI Listing
April 2017

No association between metformin use and survival in patients with pancreatic cancer: An observational cohort study.

Medicine (Baltimore) 2017 03;96(10):e6229

aDepartment of Surgical Oncology, Leiden University Medical Center, Leiden, The Netherlands, P.O. Box 9600, 2300 RC, The Netherlands bComprehensive Cancer Organisation The Netherlands, P.O. Box 231, 5600 AE, Eindhoven, The Netherlands cPHARMO Institute for Drug Outcomes Research, van Deventerlaan 30/40, Utrecht, 3528 AE, The Netherlands.

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http://dx.doi.org/10.1097/MD.0000000000006229DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5348163PMC
March 2017

[Treatment 'to be on the safe side': avoiding every risk in the case of malignancy or pre-malignancy].

Ned Tijdschr Geneeskd 2015 ;159:A9517

Leids Universitair Medisch Centrum, afd. Heelkunde, Leiden.

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October 2016

A Prospective Comparison of Younger and Older Patients' Preferences for Adjuvant Chemotherapy and Hormonal Therapy in Early Breast Cancer.

Clin Breast Cancer 2016 10 21;16(5):379-388. Epub 2016 Apr 21.

Department of Medical Decision Making, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.clbc.2016.04.001DOI Listing
October 2016

Worse Survival in Elderly Patients with Extremity Soft-Tissue Sarcoma.

Ann Surg Oncol 2016 08 8;23(8):2577-85. Epub 2016 Mar 8.

Department of Pathology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.

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http://dx.doi.org/10.1245/s10434-016-5158-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4927613PMC
August 2016

Age-dependent clinical prognostic value of histone modifications in colorectal cancer.

Transl Res 2015 May 13;165(5):578-88. Epub 2014 Nov 13.

Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.trsl.2014.11.001DOI Listing
May 2015

Survival and relapse free period of 2926 unselected older breast cancer patients: a FOCUS cohort study.

Cancer Epidemiol 2015 Feb 9;39(1):42-7. Epub 2014 Dec 9.

Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.canep.2014.11.007DOI Listing
February 2015

Validation of the 12-gene colon cancer recurrence score as a predictor of recurrence risk in stage II and III rectal cancer patients.

J Natl Cancer Inst 2014 Nov 26;106(11). Epub 2014 Sep 26.

Department of Surgery (MSR, PJKK, GJL, CJHvdV) and Department of Medical Statistics (HP), Leiden University Medical Center, Leiden, the Netherlands; Genomic Health Inc., Redwood City, CA (MLe, MLo, HT, KCL, SS).

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http://dx.doi.org/10.1093/jnci/dju269DOI Listing
November 2014

Authors' reply to Tabár and Kopans.

BMJ 2014 Nov 25;349:g6828. Epub 2014 Nov 25.

Department of Surgery, Leiden University Medical Centre, PO Box 9600, 2300 RC, Leiden, Netherlands

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http://dx.doi.org/10.1136/bmj.g6828DOI Listing
November 2014

Response.

J Natl Cancer Inst 2014 Oct 15;106(10). Epub 2014 Sep 15.

Department of Surgical Oncology (WvdW, MK, EB, CJHvdV, GJL) and Department of Geriatrics and Gerontology (WvdW, EB, RGJW, AJMdC), Leiden University Medical Center.

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http://dx.doi.org/10.1093/jnci/dju272DOI Listing
October 2014

Patients' preferences for surgical and adjuvant systemic treatment in early breast cancer: a systematic review.

Cancer Treat Rev 2014 Sep 23;40(8):1005-18. Epub 2014 Jun 23.

Department of Medical Decision Making, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

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http://dx.doi.org/10.1016/j.ctrv.2014.06.007DOI Listing
September 2014

[Surgical complications in elderly patients with breast cancer].

Ned Tijdschr Geneeskd 2013 ;157(38):A6525

Leids Universitair Medisch Centrum, Leiden.

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July 2014

[A woman with a large mass in the breast].

Ned Tijdschr Geneeskd 2013 ;157(32):A6151

Leids Universitair Medisch Centrum, Afd. Pathologie, Leiden, the Netherlands.

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April 2014

External validity of a trial comprised of elderly patients with hormone receptor-positive breast cancer.

J Natl Cancer Inst 2014 Apr 19;106(4):dju051. Epub 2014 Mar 19.

Affiliations of authors: Department of Surgical Oncology (WvdW, MK, EB, CJHvdV, GJL), Department of Gerontology and Geriatrics (WvdW, MK, EB, RGJW, AJMdC), and Department of Medical Oncology (JWRN), Leiden University Medical Center, Leiden, the Netherlands; Department of Research, Comprehensive Cancer Centre the Netherlands, Utrecht, the Netherlands (SS); Department of Health Technology and Services Research, University of Twente, Enschede, the Netherlands (SS); Department of Medical Oncology, Erasmus MC-Daniel Den Hoed Cancer Center, Rotterdam, the Netherlands (CS).

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http://dx.doi.org/10.1093/jnci/dju051DOI Listing
April 2014

The prognostic value of apoptotic and proliferative markers in breast cancer.

Breast Cancer Res Treat 2013 Nov 6;142(2):323-39. Epub 2013 Nov 6.

Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands.

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http://dx.doi.org/10.1007/s10549-013-2748-yDOI Listing
November 2013

Tumor immune subtypes distinguish tumor subclasses with clinical implications in breast cancer patients.

Breast Cancer Res Treat 2013 Nov 7;142(2):355-64. Epub 2013 Nov 7.

Departments of Surgery, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands.

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http://dx.doi.org/10.1007/s10549-013-2752-2DOI Listing
November 2013

Biomarkers in precision therapy in colorectal cancer.

Gastroenterol Rep (Oxf) 2013 Nov 23;1(3):166-83. Epub 2013 Aug 23.

Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands.

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http://dx.doi.org/10.1093/gastro/got022DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3937997PMC
November 2013

Can Zoledronic Acid be Beneficial for Promoting Tumor Response in Breast Cancer Patients Treated with Neoadjuvant Chemotherapy?

J Clin Med 2013 Oct 16;2(4):188-200. Epub 2013 Oct 16.

Department of Surgery, Leiden University Medical Center, Albinusdreef 2, ZA Leiden 2333, The Netherlands.

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http://dx.doi.org/10.3390/jcm2040188DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4470143PMC
October 2013

Survival after lumpectomy and mastectomy for early stage invasive breast cancer: the effect of age and hormone receptor status.

Cancer 2013 Sep 3;119(17):3253-4. Epub 2013 Jul 3.

Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands.

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http://dx.doi.org/10.1002/cncr.28184DOI Listing
September 2013

Alternatively spliced tissue factor promotes breast cancer growth in a β1 integrin-dependent manner.

Proc Natl Acad Sci U S A 2013 Jul 25;110(28):11517-22. Epub 2013 Jun 25.

Einthoven Laboratory for Experimental Vascular Medicine, Department of Thrombosis and Hemostasis, Leiden University Medical Center, 2333 ZA, Leiden, The Netherlands.

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http://dx.doi.org/10.1073/pnas.1307100110DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3710867PMC
July 2013

[Treatment of breast cancer in the elderly is not evidence-based].

Ned Tijdschr Geneeskd 2011 ;155(42):A3359

Leiden Universitair Medisch Centrum, afd. Heelkunde, Leiden, the Netherlands.

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May 2013

Timing of the sentinel lymph node biopsy in breast cancer patients receiving neoadjuvant therapy - recommendations for clinical guidance.

Eur J Surg Oncol 2013 May 6;39(5):417-24. Epub 2013 Mar 6.

Leiden University Medical Center, Department of Surgery, Albinusdreef 2, PO Box 9600, 2300 RC Leiden, The Netherlands.

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http://dx.doi.org/10.1016/j.ejso.2013.02.011DOI Listing
May 2013

[Pregnancy-associated breast cancer: current opinions on diagnosis and treatment].

Ned Tijdschr Geneeskd 2012 ;156(40):A5286

Afd. Klinische Oncologie, Leids Universitair Medisch Centrum, Leiden, the Netherlands.

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December 2012

Aspirin use after diagnosis improves survival in older adults with colon cancer: a retrospective cohort study.

J Am Geriatr Soc 2012 Dec 23;60(12):2232-6. Epub 2012 Nov 23.

Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands.

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http://dx.doi.org/10.1111/jgs.12033DOI Listing
December 2012

[Worse prognosis for older breast cancer patients].

Ned Tijdschr Geneeskd 2012 ;156(33):A5074

Leids Universitair Medisch Centrum, Afd. Heelkunde, Leiden, the Netherlands.

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October 2012

Hypomethylation of LINE-1 in primary tumor has poor prognosis in young breast cancer patients: a retrospective cohort study.

Breast Cancer Res Treat 2012 Aug 5;134(3):1103-14. Epub 2012 Apr 5.

Department of Molecular Oncology, John Wayne Cancer Institute (JWCI) at St. John's Health Center, 2200 Santa Monica Blvd., Santa Monica, CA 90404, USA.

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http://dx.doi.org/10.1007/s10549-012-2038-0DOI Listing
August 2012

Nonreferral of nursing home patients with suspected breast cancer.

J Am Med Dir Assoc 2012 Jun 10;13(5):464-9. Epub 2012 Feb 10.

Department of Geriatric Medicine, Diakonessenhuis Utrecht, The Netherlands.

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http://dx.doi.org/10.1016/j.jamda.2012.01.002DOI Listing
June 2012

Predicting the risk of anastomotic leakage in left-sided colorectal surgery using a colon leakage score.

J Surg Res 2011 Mar 1;166(1):e27-34. Epub 2010 Dec 1.

Department of Surgery, Leiden University Medical Center, The Netherlands.

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http://dx.doi.org/10.1016/j.jss.2010.11.004DOI Listing
March 2011

Tumor-stroma ratio in the primary tumor is a prognostic factor in early breast cancer patients, especially in triple-negative carcinoma patients.

Breast Cancer Res Treat 2011 Feb 2;125(3):687-96. Epub 2010 Apr 2.

Departments of Surgery, Leiden University Medical Center, P.O Box 9600, Albinusdreef 2, 2300 RC, Leiden, The Netherlands.

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http://dx.doi.org/10.1007/s10549-010-0855-6DOI Listing
February 2011

Specific genomic aberrations in primary colorectal cancer are associated with liver metastases.

BMC Cancer 2010 Dec 2;10:662. Epub 2010 Dec 2.

Division of Experimental Therapy, Department of Pathology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Plesmanlaan 121, 1066CX Amsterdam, The Netherlands.

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http://dx.doi.org/10.1186/1471-2407-10-662DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3027605PMC
December 2010

Impact of complications after surgery for colorectal liver metastasis on patient survival.

J Surg Res 2010 Nov 2;164(1):e91-7. Epub 2010 Aug 2.

Department of Surgery, Leiden University Medical Center, Leiden, The Netherlands.

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http://dx.doi.org/10.1016/j.jss.2010.07.022DOI Listing
November 2010