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Marcus Alexander


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Marcus Alexander, PhD
Scientist in the Human Nature Lab directed by Nicholas A. Christakis at the Yale Institute for Network Science.

Aspiring MD/PhD physician-scientist, studying medicine at the Frank H. Netter MD School of Medicine.

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Human Nature Lab
Yale Institute for Network Science
17 Hillhouse Ave
New Haven, CT 06514
Phone: (415) 658 - 5692
Twitter: @mqdicer

04 Papers, Conferences, Talks 


(recent and upcoming)

  1. Alexander M* and Goodman J*, Estimation of metabolic activity profiles across tissues of origin via aggregate and single-cell RNA-seq improve survival prediction, Genome Informatics CSHL Virtual Meeting, Cold Spring Harbor, Nov 2021.
  2. Alexander M* and Goodman J*, Machine learning identifies metabolic clusters of glioblastoma and predicts prolonged survival within the neuronal subtype, Neuroscience 2021, Society for Neuroscience Annual Meeting, Chicago, Nov 2021.
  3. Alexander M* and Goodman J*, “A unified metabolic tumor classification system for prediction of prolonged patient survival,” Americal Medical Association Student Research Symposium, Oct 22-23, 2021.
  4. Alexander M* and Goodman J*, Differential activation of tumor metabolic pathways is associated with survival in adult low grade glioma, Congress of Neurological Surgeons Annual Meeting, Oct 16-20, Austin, TX.
  5. Alexander M* and Goodman J*Tumor classification and survival estimation based on metabolic reaction activity scores from RNA sequencing data. Joint Statistical Meetings, Aug 12, 2021.
  6. Liu E, Alexander M, Feng D, Christakis NA. Facial Homophily in Human Social Networks. Joint Statistical Meetings, Aug 10, 2021.
  7. Alexander M, Chittiboina P, Single cell resolution multiomic study of sporadic pituitary adenoma pathogenesis, National Institutes of Health, Aug 3, 2021.
  8. Vishnempet S, Alexander M, Christakis NA. Modeling super-spreader behavior at individual and collective levels based on population-level social networks. Workshop on Data Science Approaches to Infectious Disease Surveillance, School of Data Science, City University of Hong Kong, July 10, 2021.
  9. Alexander M* and Goodman J*. Differential Metabolic Pathway Activity Estimated From Tumor Gene Expression Predicts Prolonged Cancer Survival Across 23 Tissue Types. American Society for Clinical Oncology, Chicago, Jun 10, 2021.
  10. Prinster D, Alexander M, Christakis NA. Exact sequence variant analysis of the gut microbiome and human psychometric phenotype conditional on host genetics. Biological Data Science. Cold Spring Harbor Laboratory. Nov 6-8, 2020.
  11. Alexander M, Nicoll E, Negron R, Christakis NA. Characterizing the health of rural elders in social networks: Evidence from Honduras. Annual Meeting of the American Public Health Association, Atlanta, GA, Nov 4-8, 2017 
*co-first authors, contributed to the work equally

Working Papers

  1. Markov G, Alexander M, Christakis NA. Chromatic properties of human social networks correlate with social efficacy and belief diversity, working paper, 2021.
  2. Alexander M, Forastiere L, Gupta S, Christakis NA. A Randomized, controlled trial of two social network targeting algorithms to maximize adoption of public health interventions, submitted for review, 2021.
  3. Kumar N, Forastiere L, Zhang T, Yang F, Li KT, Tang W, Tucker JD, Christakis NA, Alexander M. Human sexuality conditions the activation of altruism: Evidence from pay-it-forward experiments to improve health of a marginalized community, submitted for review, 2021.
  4. Oles W*, Alexander M*, Kumar N, O’Connor P, Madden L, Barry D. Socially vulnerable subpopulations at initiation of medication treatment for opioid use disorder, submitted for review, 2021
  5. Kumar N, Forastiere L, Janmohamed K, Yang F, Zhang T, Sha Y, Yang L, Tucker JD, Tang W, Alexander M. Blocking and being blocked on gay dating apps: Implications for online sexual health interventions from a study of Chinese MSM, submitted for review, 2021.
*co-first authors, contributed to the work equally*co-first author


  1. Vishnempet Shridhar S, Alexander M, Christakis NA. Characterizing super-spreaders using population-level weighted social networks in rural communities. Philosophical Transactions of the Royal Society A. 2021 (forthcoming). doi: 10.1098/rsta.2021.0123.
  2. Kumar N, Oles W, Howell BA, Janmohamed K, Lee ST, Funaro MC, O'Connor PG, Alexander M. The role of social network support in treatment outcomes for medication for opioid use disorder: A systematic review. J Subst Abuse Treat. 2021 Aug;127:108367. doi: 10.1016/j.jsat.2021.108367. Epub 2021 Mar 16. PMID: 34134871.7 [link] [medRxiv version]
  3. Feltham EM, Forastiere L, Alexander M, Christakis NA, No increase in COVID-19 mortality after the 2020 primary elections in the USA, arXiv:2010.02896v2 [stat.AP] 8 Oct 2020. [link]
  4. Kumar N, Forastiere L, Janmohamed K, Yang F, Zhang T, Sha Y, Tucker JD, Tang W, Alexander M. Improving HIV Self-Testing Social Network Interventions: The Role of Sexual Behavior Disclosure Among Chinese Men Who Have Sex with Men. AIDS Behav. 2021 Jun;25(6):1984-1992. doi: 10.1007/s10461-020-03128-1. Epub 2021 Jan 20. PMID: 33471242. [link]
  5. Yang F, Zhang TP, Tang W, Ong JJ, Alexander M, Forastiere L, Kumar N, Li KT, Zou F, Yang L, Mi G, Wang Y, Huang W, Lee A, Zhu W, Luo D, Vickerman P, Wu D, Yang B, Christakis NA, Tucker JD. Pay-it-forward gonorrhoea and chlamydia testing among men who have sex with men in China: a randomised controlled trial. Lancet Infect Dis. 2020 Aug;20(8):976-982. doi: 10.1016/S1473-3099(20)30172-9. Epub 2020 Apr 28. PMID: 32530426. [link]
  6. Kumar N, Forastiere L, Zhang T, Yang F, Li KT, Tang W, Tucker JD, Christakis NA, Alexander M. Lack of sexual behavior disclosure may distort STI testing outcomes. BMC Public Health. 2020 May 4;20(1):616. doi: 10.1186/s12889-020-08768-5. PMID: 32366241; PMCID: PMC7197169. [link]
  7. Iwamoto SK, Alexander M, Torres M, Irwin MR, Christakis NA, Nishi A. Mindfulness Meditation Activates Altruism. Sci Rep. 2020 Apr 16;10(1):6511. doi: 10.1038/s41598-020-62652-1. PMID: 32300129; PMCID: PMC7162971. [link]
  8. Nishi A, Alexander M, Fowler JH, Christakis NA. Assortative mating at loci under recent natural selection in humans. Biosystems. 2020 Jan;187:104040. doi: 10.1016/j.biosystems.2019.104040. Epub 2019 Oct 1. PMID: 31585150; PMCID: PMC7471337. [link]
  9. Zhang TP, Yang F, Tang W, Alexander M, Forastiere L, Kumar N, Li K, Zou F, Yang L, Mi G, Wang Y, Huang W, Lee A, Zhu W, Vickerman P, Wu D, Yang B, Christakis NA, Tucker JD. Pay-it-forward gonorrhea and chlamydia testing among men who have sex with men in China: a study protocol for a three-arm cluster randomized controlled trial. Infect Dis Poverty. 2019 Aug 16;8(1):76. doi: 10.1186/s40249-019-0581-1. PMID: 31426869; PMCID: PMC6700988.v. [link]
  10. Alexander M, Christia F. Context modularity of human altruism. Science. 2011 Dec 9;334(6061):1392-4. doi: 10.1126/science.1202599. PMID: 22158815. [link] [MIT News article]
  11. Alexander M, Harding MC, Lamarche C. Quantile Regression for Time-Series-Cross-Section Data. International journal of statistics and management system. 2011; 6(1-2):47-72
  12. Alexander M, Harding MC. Quantifying the impact of economic crises on infant mortality in advanced economies. Applied economics. 2011; 43(24):3313-3323. [link]
  13. Day CS, Alexander M, Lal S, Horton H, Ahn CS, Pauyo T, Rozental TD. Effects of workers' compensation on the diagnosis and surgical treatment of patients with hand and wrist disorders. J Bone Joint Surg Am. 2010 Oct 6;92(13):2294-9. doi: 10.2106/JBJS.I.00158. PMID: 20926723. [link]
  14. Alexander M, Bradbury BD, Kewalramani R, Barlev A, Mohanty SA, Globe D. Chronic kidney disease and US healthcare resource utilization in a nationally representative sample. Am J Nephrol. 2009;29(5):473-82. doi: 10.1159/000178816. Epub 2008 Nov 27. PMID: 19039210. [link]
  15. Franko OI, Lal S, Pauyo T, Alexander M, Zurakowski D, Day C. Validation of an objective device for assessing circumductive wrist motion. J Hand Surg Am. 2008 Oct;33(8):1293-300. doi: 10.1016/j.jhsa.2008.03.012. PMID: 18929191. [link]
  16. Alexander M, Christakis NA. Bias and asymmetric loss in expert forecasts: a study of physician prognostic behavior with respect to patient survival. J Health Econ. 2008 Jul;27(4):1095-1108. doi: 10.1016/j.jhealeco.2008.02.011. Epub 2008 Mar 18. PMID: 18539349. [link]
  17. Alexander M, Franko OI, Makhni EC, Zurakowski D, Day CS. Validation of a modern activity hand survey with respect to reliability, construct and criterion validity. J Hand Surg Eur Vol. 2008 Oct;33(5):653-60. doi: 10.1177/1753193408093810. PMID: 18977836. [link]
  18. Alexander M. Democratization and Hybrid Regimes: Comparative Evidence from Southeast Europe. East European Politics & Societies. 2008; 22(4):928-954. doi: 10.1177/0888325408327634. [link]
  19. Alexander M, Kewalramani R, Agodoa I, Globe D. Association of anemia correction with health related quality of life in patients not on dialysis. Curr Med Res Opin. 2007 Dec;23(12):2997-3008. doi: 10.1185/030079907X242502. PMID: 17958944. [link]
  20. Alexander M. Determinants of Social Capital: New Evidence on Religion, Diversity and Structural Change. British journal of political science. 2007; 37(02):368-377. doi: 10.1017/S000712340700018X. [link]
  21. Alexander M. The Internet and Democratization: The Development of Russian Internet Policy. Demokratizatskiya. 2004 October; 12(4):607-627. doi: 10.3200/DEMO.12.4.607-627. [link]
  22. Fjell J, Hjelmström P, Hormuzdiar W, Milenkovic M, Aglieco F, Tyrrell L, Dib-Hajj S, Waxman SG, Black JA. Localization of the tetrodotoxin-resistant sodium channel NaN in nociceptors. Neuroreport. 2000 Jan 17;11(1):199-202. doi: 10.1097/00001756-200001170-00039. PMID: 10683857. [link]


  1. Introduction to Sexual and Gender Minority Health, Cornell Scott Hill Community Health Center, New Haven, CT, June, 2021.
  2. Gender Prounous and LGBTQ+ Health, Sex Workers and Alies Network, New Haven, CT, June, 2021
  3. Neurobiology of Addiction, Miriam House, Los Angeles, February, 2016.
  4. Histone Modificiations in Glioblastoma Stem Cells, Howard Hughes Medical Institute, Chevy Chase, MD, April, 2012.