Evidence map›Paper›PMID 29245013›Full record

ArticleCell2017

Combination Cancer Therapy Can Confer Benefit via Patient-to-Patient Variability without Drug Additivity or Synergy.

Adam C Palmer, Peter K Sorger

Open access · bronzeAbstract read
In one paragraph

Article in Cell, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 391 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
391citing papers in PubMed, 4 pooled it
53.3field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

391 citing papers in PubMed, 4 syntheses or guidelines pooled it, 647 citations in OpenAlex.

  1. Pooled it
  2. Exercise and pathologic complete response to cancer treatment: a systematic review and meta-analysis.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2026
    Pooled it
  3. Pooled it
  4. Guideline
  5. Trial
  6. Phase II Study of Eribulin plus Pembrolizumab in Metastatic Soft-tissue Sarcomas: Clinical Outcomes and Biological Correlates.Clinical cancer research : an official journal of the American Association for Cancer Research · 2024
    Trial
  7. Trial
  8. Article
  9. Review
  10. Article
  11. Article
  12. Panitumumab-Based EGFR Blockade in SMARCB1-Deficient Renal Medullary Carcinoma: Preclinical Basis and Prospective Clinical Activity.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026
    Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

331 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Adam C PalmerLaboratory of Systems Pharmacology, Program in Therapeutic Science, Harvard Medical School, Boston, MA 02115, USA.
Peter K SorgerLaboratory of Systems Pharmacology, Program in Therapeutic Science, Harvard Medical School, Boston, MA 02115, USA. Electronic address: peter_sorger@hms.harvard.edu.
Harvard University · US

Funding

TRANSLATIONAL PHARMACOLOGY COREP50GM107618 · NIGMS · HARVARD MEDICAL SCHOOL · PI GOLAN, DAVID E. · 2014 to 2018
$10.8M
NIGMS NIH HHS P50 GM107618
6 · The paper itself

Abstract

Combination cancer therapies aim to improve the probability and magnitude of therapeutic responses and reduce the likelihood of acquired resistance in an individual patient. However, drugs are tested in clinical trials on genetically diverse patient populations. We show here that patient-to-patient variability and independent drug action are sufficient to explain the superiority of many FDA-approved drug combinations in the absence of drug synergy or additivity. This is also true for combinations tested in patient-derived tumor xenografts. In a combination exhibiting independent drug action, each patient benefits solely from the drug to which his or her tumor is most sensitive, with no added benefit from other drugs. Even when drug combinations exhibit additivity or synergy in pre-clinical models, patient-to-patient variability and low cross-resistance make independent action the dominant mechanism in clinical populations. This insight represents a different way to interpret trial data and a different way to design combination therapies.

Indexed as

Antineoplastic Combined Chemotherapy ProtocolsAnimalsBiological Variation, IndividualClinical Trials as TopicDrug Delivery SystemsDrug InteractionsDrug Resistance, NeoplasmHeterograftsHumansImmunotherapyNeoplasmsNeoplasm Transplantationcancerclinical trialscombination therapydrug synergymathematical modelingpatient-derived tumor xenograftpharmacologysystems biologytumor heterogeneity

Identifiers

PMID29245013
PMCPMC5741091
OpenAlexW2774112395

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.