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. 2021 Feb;124(4):842-854.
doi: 10.1038/s41416-020-01185-w. Epub 2021 Jan 26.

CYP3A7*1C allele: linking premenopausal oestrone and progesterone levels with risk of hormone receptor-positive breast cancers

Nichola Johnson #  1 Sarah Maguire #  2 Anna Morra #  3 Pooja Middha Kapoor #  4   5 Katarzyna Tomczyk  6 Michael E Jones  7 Minouk J Schoemaker  7 Clare Gilham  8 Manjeet K Bolla  9 Qin Wang  9 Joe Dennis  9 Thomas U Ahearn  10 Irene L Andrulis  11   12 Hoda Anton-Culver  13 Natalia N Antonenkova  14 Volker Arndt  15 Kristan J Aronson  16 Annelie Augustinsson  17 Caroline Baynes  18 Laura E Beane Freeman  10 Matthias W Beckmann  19 Javier Benitez  20   21 Marina Bermisheva  22 Carl Blomqvist  23   24 Bram Boeckx  25   26 Natalia V Bogdanova  14   27   28 Stig E Bojesen  29   30   31 Hiltrud Brauch  32   33   34 Hermann Brenner  15   34   35 Barbara Burwinkel  36   37 Daniele Campa  4   38 Federico Canzian  39 Jose E Castelao  40 Stephen J Chanock  10 Georgia Chenevix-Trench  41 Christine L Clarke  42 NBCS CollaboratorsDon M Conroy  18 Fergus J Couch  43 Angela Cox  44 Simon S Cross  45 Kamila Czene  46 Thilo Dörk  28 A Heather Eliassen  47   48 Christoph Engel  49   50 D Gareth Evans  51   52 Peter A Fasching  19   53 Jonine Figueroa  10   54   55 Giuseppe Floris  56 Henrik Flyger  57 Manuela Gago-Dominguez  58   59 Susan M Gapstur  60 Montserrat García-Closas  10 Mia M Gaudet  60 Graham G Giles  61   62   63 Mark S Goldberg  64   65 Anna González-Neira  21 AOCS GroupPascal Guénel  66 Eric Hahnen  67   68 Christopher A Haiman  69 Niclas Håkansson  70 Per Hall  46   71 Ute Hamann  72 Patricia A Harrington  18 Steven N Hart  73 Maartje J Hooning  74 John L Hopper  62 Anthony Howell  75 David J Hunter  48   76 ABCTB InvestigatorskConFab InvestigatorsAgnes Jager  74 Anna Jakubowska  77   78 Esther M John  79   80 Rudolf Kaaks  4 Renske Keeman  3 Elza Khusnutdinova  22   81 Cari M Kitahara  82 Veli-Matti Kosma  83   84   85 Stella Koutros  10 Peter Kraft  48   86 Vessela N Kristensen  87   88 Allison W Kurian  79   80 Diether Lambrechts  25   26 Loic Le Marchand  89 Martha Linet  82 Jan Lubiński  77 Arto Mannermaa  83   84   85 Siranoush Manoukian  90 Sara Margolin  71   91 John W M Martens  74 Dimitrios Mavroudis  92 Rebecca Mayes  18 Alfons Meindl  93 Roger L Milne  61   62   63 Susan L Neuhausen  94 Heli Nevanlinna  95 William G Newman  51   52 Sune F Nielsen  29   30 Børge G Nordestgaard  29   30   31 Nadia Obi  96 Andrew F Olshan  97 Janet E Olson  73 Håkan Olsson  17 Ester Orban  98 Tjoung-Won Park-Simon  28 Paolo Peterlongo  99 Dijana Plaseska-Karanfilska  100 Katri Pylkäs  101   102 Gad Rennert  103 Hedy S Rennert  103 Kathryn J Ruddy  104 Emmanouil Saloustros  105 Dale P Sandler  106 Elinor J Sawyer  107 Rita K Schmutzler  67   68   108 Christopher Scott  73 Xiao-Ou Shu  109 Jacques Simard  110 Snezhana Smichkoska  111 Christof Sohn  112 Melissa C Southey  61   63   113 John J Spinelli  114   115 Jennifer Stone  62   116 Rulla M Tamimi  48   117 Jack A Taylor  106   118 Rob A E M Tollenaar  119 Ian Tomlinson  120   121 Melissa A Troester  97 Thérèse Truong  66 Celine M Vachon  122 Elke M van Veen  51   52 Sophia S Wang  123   124 Clarice R Weinberg  125 Camilla Wendt  91 Hans Wildiers  56 Robert Winqvist  101   102 Alicja Wolk  70   126 Wei Zheng  109 Argyrios Ziogas  13 Alison M Dunning  18 Paul D P Pharoah  9   18 Douglas F Easton  9   18 A Forbes Howie  127 Julian Peto  8 Isabel Dos-Santos-Silva  8 Anthony J Swerdlow  7   128 Jenny Chang-Claude  4   98 Marjanka K Schmidt  3   129 Nick Orr  2 Olivia Fletcher  6
Collaborators, Affiliations

CYP3A7*1C allele: linking premenopausal oestrone and progesterone levels with risk of hormone receptor-positive breast cancers

Nichola Johnson et al. Br J Cancer. 2021 Feb.

Abstract

Background: Epidemiological studies provide strong evidence for a role of endogenous sex hormones in the aetiology of breast cancer. The aim of this analysis was to identify genetic variants that are associated with urinary sex-hormone levels and breast cancer risk.

Methods: We carried out a genome-wide association study of urinary oestrone-3-glucuronide and pregnanediol-3-glucuronide levels in 560 premenopausal women, with additional analysis of progesterone levels in 298 premenopausal women. To test for the association with breast cancer risk, we carried out follow-up genotyping in 90,916 cases and 89,893 controls from the Breast Cancer Association Consortium. All women were of European ancestry.

Results: For pregnanediol-3-glucuronide, there were no genome-wide significant associations; for oestrone-3-glucuronide, we identified a single peak mapping to the CYP3A locus, annotated by rs45446698. The minor rs45446698-C allele was associated with lower oestrone-3-glucuronide (-49.2%, 95% CI -56.1% to -41.1%, P = 3.1 × 10-18); in follow-up analyses, rs45446698-C was also associated with lower progesterone (-26.7%, 95% CI -39.4% to -11.6%, P = 0.001) and reduced risk of oestrogen and progesterone receptor-positive breast cancer (OR = 0.86, 95% CI 0.82-0.91, P = 6.9 × 10-8).

Conclusions: The CYP3A7*1C allele is associated with reduced risk of hormone receptor-positive breast cancer possibly mediated via an effect on the metabolism of endogenous sex hormones in premenopausal women.

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Conflict of interest statement

M.W.B. conducts research funded by Amgen, Novartis and Pfizer. P.A.F. conducts research funded by Amgen, Novartis and Pfizer. He received honoraria from Roche, Novartis and Pfizer. A.W.K.’s institution has received research funding from Myriad Genetics for an unrelated project (funding dates 2017–2019). P.H., .P.D.P.P., O.F., K.C. and A.C. are members of the Editorial Board of BJC. The remaining authors declare no competing interests.

Figures

Fig. 1
Fig. 1. Manhattan plot of single-nucleotide polymorphism (SNP) associations with luteal-phase urinary oestrone-3-glucuronide levels in 560 premenopausal women.
–log10 P values for SNP associations are plotted against the genomic coordinates (hg19). The red line indicates the conventionally accepted threshold for genome-wide significance (P = 1 × 10−8).

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