World's Best Scientists 2026 revealed!
Patricia C. M. O’Brien

Patricia C. M. O’Brien

D-Index & Metrics

Biology and Biochemistry

D-Index
53
Citations
9417
World Ranking
16230
National Ranking
1283

Patricia C. M. O’Brien publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Patricia C. M. O’Brien sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 413 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 848 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 949 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 840 scientists 207–216 publications: 733 scientists 217–226 publications: 708 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 417 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 196 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 59 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 163 publications — 33rd percentile

33% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Patricia C. M. O’Brien D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Patricia C. M. O’Brien sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 316 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 899 scientists 52–53 D-Index: 1,025 scientists 54–55 D-Index: 1,149 scientists 56–57 D-Index: 1,235 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,162 scientists 62–63 D-Index: 1,130 scientists 64–65 D-Index: 1,031 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 714 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 71 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 53 D-Index — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Patricia C. M. O'Brien is affiliated with the University of Cambridge in the United Kingdom and has contributed to research primarily within the Social Sciences. Their work spans multiple subfields, including Sociology and Political Science, Education, General Health Professions, Finance, and Genetics.

The researcher's publications focus extensively on topics such as Healthcare innovation and challenges, Housing, Finance, and Neoliberalism, Genetic diversity and population structure, Chromosomal and Genetic Variations, Genomics and Phylogenetic Studies, Elder Abuse and Neglect, and Geriatric Care and Nursing Homes.

O'Brien's recent papers include:

  • Chromosomal Evolution in the Phylogenetic Context: A Remarkable Karyotype Reorganization in Neotropical Parrot Myiopsitta monachus (Psittacidae), 2020, Frontiers in Genetics
  • Accommodating adults with intellectual disabilities and high support needs in Individual Supported Living arrangements, 2022, AHURI Final Report
  • Abandoning 'a Lifetime of Habits' to Avoid the 'Sins of the Past', 2022, International Journal of Disability and Social Justice
  • The Relationship Between Personal Wellbeing, Choice and NDIS Individualised Planning and Support for People With Intellectual Disabilities, 2025, Journal of Applied Research in Intellectual Disabilities
  • SAFETY USHERSS: A QUALITY IMPROVEMENT INITIATIVE ON UTILIZING THE SAFETY HUDDLE TO EMPOWER RESIDENTS AS SAFETY STEWARDS (USHERSS), 2025, Academic Pediatrics

Frequent coauthors in their body of work include Mary-Ann O'Donovan, Vivienne Riches, Trevor R. Parmenter, Gisselle Gallego, and Ivanete de Oliveira Furo.

O'Brien has published repeatedly in select academic venues, with multiple works appearing in the Journal of Applied Research in Intellectual Disabilities. Other publication venues include Frontiers in Genetics, AHURI Final Report, International Journal of Disability and Social Justice, and Academic Pediatrics.

Best Publications

  • Whole-genome characterization of chemoresistant ovarian cancer

    Ann-Marie Patch;Ann-Marie Patch;Elizabeth Christie;Dariush Etemadmoghadam;Dariush Etemadmoghadam;Dale W. Garsed

  • In the platypus a meiotic chain of ten sex chromosomes shares genes with the bird Z and mammal X chromosomes

    Frank Grützner;Willem Rens;Enkhjargal Tsend-Ayush;Nisrine El-Mogharbel

  • Spectral karyotyping refines cytogenetic diagnostics of constitutional chromosomal abnormalities

    Evelin Schrõck;Tim Veldman;Hesed Padilla-Nash;Yi Ning

  • Reciprocal chromosome painting among human, aardvark, and elephant (superorder Afrotheria) reveals the likely eutherian ancestral karyotype

    F. Yang;E. Z. Alkalaeva;P. L. Perelman;A. T. Pardini

  • Resolution and evolution of the duck-billed platypus karyotype with an X1Y1X2Y2X3Y3X4Y4X5Y5 male sex chromosome constitution

    Willem Rens;Frank Grützner;Patricia C. M. O'Brien;Helen Fairclough

  • Refined genome-wide comparative map of the domestic horse, donkey and human based on cross-species chromosome painting: insight into the occasional fertility of mules.

    Fengtang Yang;Beiyuan Fu;Patricia C. M. O'Brien;Wenhui Nie

  • Defining the ancestral karyotype of all primates by multidirectional chromosome painting between tree shrews, lemurs and humans.

    S. Müller;R. Stanyon;P. C. M. O’Brien;M. A. Ferguson-Smith

  • Cross-species colour segmenting: a novel tool in human karyotype analysis.

    S. Müller;P. C. M. O'Brien;M. A. Ferguson‐Smith;J. Wienberg

  • Molecular cytogenetic definition of the chicken genome: The first complete avian karyotype

    J. S. Masabanda;D. W. Burt;P. C. M. O’Brien;A. Vignal

  • The multiple sex chromosomes of platypus and echidna are not completely identical and several share homology with the avian Z.

    Willem Rens;Patricia C. M. O'Brien;Frank Grutzner;Oliver Clarke

  • Conservation of human vs. feline genome organization revealed by reciprocal chromosome painting.

    J. Wienberg;R. Stanyon;W.G. Nash;P.C.M. O’Brien

  • Reciprocal chromosome painting illuminates the history of genome evolution of the domestic cat, dog and human.

    Fengtang Yang;Alexander S. Graphodatsky;Patricia C. M. O'Brien;Amanda Colabella

  • CHROMOSOMAL EVOLUTION OF THE CHINESE MUNTJAC (MUNTIACUS REEVESI)

    F. Yang;P. C. M. O’Brien;J. Wienberg;H. Neitzel

  • Comparative analysis of mammalian Y chromosomes illuminates ancestral structure and lineage-specific evolution

    Gang Li;Brian W. Davis;Terje Raudsepp;Alison J. Pearks Wilkerson

  • Spectral karyotyping, a 24-colour FISH technique for the identification of chromosomal rearrangements.

    Merryn Macville;T. Veldman;Hesed Padilla-Nash;Danny Wangsa

  • A time- and cost-effective strategy to sequence mammalian Y Chromosomes: an application to the de novo assembly of gorilla Y

    Marta Tomaszkiewicz;Samarth Rangavittal;Monika Cechova;Rebeca Campos Sanchez

  • Cross-species chromosome painting among camel, cattle, pig and human: further insights into the putative Cetartiodactyla ancestral karyotype

    Gabriel Balmus;Vladimir A. Trifonov;Vladimir A. Trifonov;Larisa S. Biltueva;Patricia C.M. O’Brien

  • Cross-species chromosome painting between human and marsupial directly demonstrates the ancient region of the mammalian X.

    Rob Glas;Jennifer A. Marshall Graves;Roland Toder;Malcolm Ferguson-Smith

  • Genomic Restructuring in the Tasmanian Devil Facial Tumour: Chromosome Painting and Gene Mapping Provide Clues to Evolution of a Transmissible Tumour

    Janine E. Deakin;Hannah S. Bender;Anne-Maree Pearse;Willem Rens

  • The Genome Phylogeny of Domestic Cat, Red Panda and Five Mustelid Species Revealed by Comparative Chromosome Painting and G-banding

    Wenhui Nie;Jinhuan Wang;Patricia C.M. O'Brien;Beiyuan Fu

Frequent Co-Authors

Malcolm A. Ferguson-Smith
Malcolm A. Ferguson-Smith University of Cambridge
Fengtang Yang
Fengtang Yang Wellcome Sanger Institute
Alexander S. Graphodatsky
Alexander S. Graphodatsky Novosibirsk State University
Beiyuan Fu
Beiyuan Fu Wellcome Sanger Institute
Jennifer A. Marshall Graves
Jennifer A. Marshall Graves La Trobe University
David D.L. Bowtell
David D.L. Bowtell Peter MacCallum Cancer Centre
Darren K. Griffin
Darren K. Griffin University of Kent
Johannes Wienberg
Johannes Wienberg University of Cambridge
Roscoe Stanyon
Roscoe Stanyon University of Florence
Frank Grützner
Frank Grützner University of Adelaide

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