Evidence map›Paper›PMID 20425602›Full record

ReviewCurrent oncology reports2010

CYP2D6 polymorphisms and tamoxifen metabolism: clinical relevance.

Michaela J Higgins, Vered Stearns

Abstract readReview
PubMed Publisher
In one paragraph

Review in Current oncology reports, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
5.5field-weighted citation impact, top 4% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

  1. Genetic Variation and Hot Flashes: A Systematic Review.The Journal of clinical endocrinology and metabolism · 2020
    Pooled it
  2. Trial
  3. Trial
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. PTS: a pharmaceutical target seeker.Database : the journal of biological databases and curation · 2017
    Article
  13. Article
  14. Tamoxifen for women at high risk of breast cancer.Breast cancer (Dove Medical Press) · 2014
    Review
  15. Article
  16. Article
  17. Review
  18. Review
  19. Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Michaela J HigginsDepartment of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins School of Medicine, 1650 Orleans Street, CRBI, Room 145, Baltimore, MD 21231, USA. mhiggin9@jhmi.edu
Vered Stearns
Johns Hopkins University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The selective estrogen receptor modulator tamoxifen has been used for more than three decades to treat metastatic and early-stage receptor-positive breast cancer and, more recently, to prevent the disease. Biotransformation of tamoxifen to the potent antiestrogen endoxifen is performed by cytochrome P450 (CYP) enzymes, in particular the CYP2D6 isoform. Genetic variants in the CYP2D6 gene may result in CYP2D6 enzymes with reduced or null activity. Strong and intermediate inhibitors of CYP2D6, which may be used to treat hot flashes or psychiatric conditions in breast cancer patients, can also negatively impact enzyme function. Prospective data are lacking, but the balance of current evidence strongly suggests that, compared with women with two wild-type alleles, the presence of two null alleles, and possibly one null allele, predicts reduced tamoxifen metabolism and an inferior outcome in postmenopausal women with early breast cancer who receive adjuvant treatment with the drug. Unfortunately, studies to date have been largely retrospective and the interpretation of their results is limited by examination of archival tissue samples and the inclusion of heterogeneous populations. Although we do not currently recommend routine CYP2D6 testing for women who do not have alternative standard therapies, the use of concomitant strong or intermediate inhibitors of CYP2D6 should be avoided if feasible. This review summarizes the literature to date with a focus on clinically relevant recent studies that examined the association between CYP2D6 polymorphisms and tamoxifen-associated outcomes.

Indexed as

Polymorphism, GeneticAntineoplastic Agents, HormonalBreast NeoplasmsCytochrome P-450 CYP2D6FemaleHumansPharmacogeneticsTamoxifenAntineoplastic Agents, HormonalCytochrome P-450 CYP2D6Tamoxifen

Identifiers

PMID20425602
OpenAlexW2098594630

What OpenQuestion holds

Textmetadata
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.