Undergraduate Degree

  • University of Michigan , 2003 , Ann Arbor , MI

Medical School

  • University of California , 2010 , San Francisco , CA


  • Boston Combined Residency Program (BCRP) , 2011 , Boston , MA


  • Boston Combined Residency Program (BCRP) , 2012 , Boston , MA


  • Harvard Neonatal-Perinatal Medicine Fellowship Training Program , 2016 , Boston , MA

Philosophy of Care

In the Boston Children’s Hospital (BCH) Neonatal Intensive Care Unit (NICU) our philosophy is to ensure that every patient receives the best care for the best possible outcomes. We consider our “patient” to be the baby and the family; we are constantly striving to serve the needs of both. This requires a team based approach with all members being essential.


After attending the University of Michigan, Dr. Morton obtained her MD/PhD degrees through the Medical Scientist Training Program at the University of California San Francisco. She then completed her Pediatrics Residency in the Boston Combined Residency Program and Neonatology Fellowship at the Harvard Neonatal-Perinatal Fellowship Program. Dr. Morton is currently an Instructor at Harvard Medical School and a clinical attending physician in the Neonatal Intensive Care Unit.

Dr. Morton serves on the NICU Nutrition Committee and participates in Quality Improvement projects with the aim of improving care for all patients in the NICU. Dr. Morton is also active in research investigating genetic contributions to congenital heart disease, and effects of infant nutrition on neurodevelopment.


  • American Board of Pediatrics, General Pediatrics
  • American Board of Pediatrics, Neonatal-Perinatal Medicine


Publications powered by Harvard Catalyst Profiles

  1. Ward TL, Tai W, Morton SU, Impens F, VanDamme P, Van Haver D, Timmerman E, Venturini G, Zhang K, Jang MY, Willcox JA, Haghighi A, Gelb BD, Chung WK, Goldmuntz E, Porter GA, Lifton R, Brueckner M, Yost HJ, Bruneau BG, Gorham J, Kim Y, Pereira AC, Homsy J, Benson CC, DePalma SR, Varland S, Chen CS, Arnesen T, Gevaert K, Seidman CE, Seidman JG. Mechanisms of Congenital Heart Disease Caused by NAA15 Haploinsufficiency. Circ Res. 2021 Feb 09. View abstract
  2. Martin-Trujillo A, Patel N, Richter F, Jadhav B, Garg P, Morton SU, McKean DM, DePalma SR, Goldmuntz E, Gruber D, Kim R, Newburger JW, Porter GA, Giardini A, Bernstein D, Tristani-Firouzi M, Seidman JG, Seidman CE, Chung WK, Gelb BD, Sharp AJ. Rare genetic variation at transcription factor binding sites modulates local DNA methylation profiles. PLoS Genet. 2020 11; 16(11):e1009189. View abstract
  3. Morton SU, Shimamura A, Newburger PE, Opotowsky AR, Quiat D, Pereira AC, Jin SC, Gurvitz M, Brueckner M, Chung WK, Shen Y, Bernstein D, Gelb BD, Giardini A, Goldmuntz E, Kim RW, Lifton RP, Porter GA, Srivastava D, Tristani-Firouzi M, Newburger JW, Seidman JG, Seidman CE. Association of Damaging Variants in Genes With Increased Cancer Risk Among Patients With Congenital Heart Disease. JAMA Cardiol. 2020 Oct 21. View abstract
  4. Sharma A, Wasson LK, Willcox JA, Morton SU, Gorham JM, DeLaughter DM, Neyazi M, Schmid M, Agarwal R, Jang MY, Toepfer CN, Ward T, Kim Y, Pereira AC, DePalma SR, Tai A, Kim S, Conner D, Bernstein D, Gelb BD, Chung WK, Goldmuntz E, Porter G, Tristani-Firouzi M, Srivastava D, Seidman JG, Seidman CE. GATA6 mutations in hiPSCs inform mechanisms for maldevelopment of the heart, pancreas, and diaphragm. Elife. 2020 10 15; 9. View abstract
  5. Paulson JN, Williams BL, Hehnly C, Mishra N, Sinnar SA, Zhang L, Ssentongo P, Mbabazi-Kabachelor E, Wijetunge DSS, von Bredow B, Mulondo R, Kiwanuka J, Bajunirwe F, Bazira J, Bebell LM, Burgoine K, Couto-Rodriguez M, Ericson JE, Erickson T, Ferrari M, Gladstone M, Guo C, Haran M, Hornig M, Isaacs AM, Kaaya BN, Kangere SM, Kulkarni AV, Kumbakumba E, Li X, Limbrick DD, Magombe J, Morton SU, Mugamba J, Ng J, Olupot-Olupot P, Onen J, Peterson MR, Roy F, Sheldon K, Townsend R, Weeks AD, Whalen AJ, Quackenbush J, Ssenyonga P, Galperin MY, Almeida M, Atkins H, Warf BC, Lipkin WI, Broach JR, Schiff SJ. Paenibacillus infection with frequent viral coinfection contributes to postinfectious hydrocephalus in Ugandan infants. Sci Transl Med. 2020 09 30; 12(563). View abstract
  6. Morton SU, Brettin K, Feldman HA, Leeman KT. Association of nucleated red blood cell count with mortality among neonatal intensive care unit patients. Pediatr Neonatol. 2020 12; 61(6):592-597. View abstract
  7. Boskovski MT, Homsy J, Nathan M, Sleeper LA, Morton S, Manheimer KB, Tai A, Gorham J, Lewis M, Swartz M, Alfieris GM, Bacha EA, Karimi M, Meyer D, Nguyen K, Bernstein D, Romano-Adesman A, Porter GA, Goldmuntz E, Chung WK, Srivastava D, Kaltman JR, Tristani-Firouzi M, Lifton R, Roberts AE, Gaynor JW, Gelb BD, Kim R, Seidman JG, Brueckner M, Mayer JE, Newburger JW, Seidman CE. De Novo Damaging Variants, Clinical Phenotypes, and Post-Operative Outcomes in Congenital Heart Disease. Circ Genom Precis Med. 2020 Aug; 13(4):e002836. View abstract
  8. Richter F, Morton SU, Kim SW, Kitaygorodsky A, Wasson LK, Chen KM, Zhou J, Qi H, Patel N, DePalma SR, Parfenov M, Homsy J, Gorham JM, Manheimer KB, Velinder M, Farrell A, Marth G, Schadt EE, Kaltman JR, Newburger JW, Giardini A, Goldmuntz E, Brueckner M, Kim R, Porter GA, Bernstein D, Chung WK, Srivastava D, Tristani-Firouzi M, Troyanskaya OG, Dickel DE, Shen Y, Seidman JG, Seidman CE, Gelb BD. Genomic analyses implicate noncoding de novo variants in congenital heart disease. Nat Genet. 2020 08; 52(8):769-777. View abstract
  9. Morton SU, Agarwal R, Madden JA, Genetti CA, Brownstein CA, López-Giráldez F, Choi J, Seidman CE, Seidman JG, Lyon GJ, Agrawal PB. Congenital Heart Defects Due to TAF1 Missense Variants. Circ Genom Precis Med. 2020 06; 13(3):e002843. View abstract
  10. Hsieh A, Morton SU, Willcox JAL, Gorham JM, Tai AC, Qi H, DePalma S, McKean D, Griffin E, Manheimer KB, Bernstein D, Kim RW, Newburger JW, Porter GA, Srivastava D, Tristani-Firouzi M, Brueckner M, Lifton RP, Goldmuntz E, Gelb BD, Chung WK, Seidman CE, Seidman JG, Shen Y. EM-mosaic detects mosaic point mutations that contribute to congenital heart disease. Genome Med. 2020 04 29; 12(1):42. View abstract
  11. Morton SU, Vyas R, Gagoski B, Vu C, Litt J, Larsen RJ, Kuchan MJ, Lasekan JB, Sutton BP, Grant PE, Ou Y. Maternal Dietary Intake of Omega-3 Fatty Acids Correlates Positively with Regional Brain Volumes in 1-Month-Old Term Infants. Cereb Cortex. 2020 04 14; 30(4):2057-2069. View abstract
  12. Morton SU, Maleyeff L, Wypij D, Yun HJ, Newburger JW, Bellinger DC, Roberts AE, Rivkin MJ, Seidman JG, Seidman CE, Grant PE, Im K. Abnormal Left-Hemispheric Sulcal Patterns Correlate with Neurodevelopmental Outcomes in Subjects with Single Ventricular Congenital Heart Disease. Cereb Cortex. 2020 03 21; 30(2):476-487. View abstract
  13. Morton SU, Yuen JC, Feldman HA, Hashim E, Rudie C, Lindamood KE, Caughey D, Moline M, Sims JK, Sola-Visner MC, Leeman KT. Screening With Reticulocyte Hemoglobin Increased Iron Sufficiency Among NICU Patients. Pediatr Qual Saf. 2020 Mar-Apr; 5(2):e258. View abstract
  14. Barrero-Castillero A, Morton SU, Nelson CA, Smith VC. Psychosocial Stress and Adversity: Effects from the Perinatal Period to Adulthood. Neoreviews. 2019 12; 20(12):e686-e696. View abstract
  15. Richter F, Hoffman GE, Manheimer KB, Patel N, Sharp AJ, McKean D, Morton SU, DePalma S, Gorham J, Kitaygorodksy A, Porter GA, Giardini A, Shen Y, Chung WK, Seidman JG, Seidman CE, Schadt EE, Gelb BD. ORE identifies extreme expression effects enriched for rare variants. Bioinformatics. 2019 10 15; 35(20):3906-3912. View abstract
  16. Taylor JL, Debost JPG, Morton SU, Wigdor EM, Heyne HO, Lal D, Howrigan DP, Bloemendal A, Larsen JT, Kosmicki JA, Weiner DJ, Homsy J, Seidman JG, Seidman CE, Agerbo E, McGrath JJ, Mortensen PB, Petersen L, Daly MJ, Robinson EB. Paternal-age-related de novo mutations and risk for five disorders. Nat Commun. 2019 07 10; 10(1):3043. View abstract
  17. O'Connell AE, Gerashchenko MV, O'Donohue MF, Rosen SM, Huntzinger E, Gleeson D, Galli A, Ryder E, Cao S, Murphy Q, Kazerounian S, Morton SU, Schmitz-Abe K, Gladyshev VN, Gleizes PE, Séraphin B, Agrawal PB. Mammalian Hbs1L deficiency causes congenital anomalies and developmental delay associated with Pelota depletion and 80S monosome accumulation. PLoS Genet. 2019 02; 15(2):e1007917. View abstract
  18. Minoche AE, Horvat C, Johnson R, Gayevskiy V, Morton SU, Drew AP, Woo K, Statham AL, Lundie B, Bagnall RD, Ingles J, Semsarian C, Seidman JG, Seidman CE, Dinger ME, Cowley MJ, Fatkin D. Response to Brodehl et al. Genet Med. 2019 05; 21(5):1248-1249. View abstract
  19. Shaaban S, MacKinnon S, Andrews C, Staffieri SE, Maconachie GDE, Chan WM, Whitman MC, Morton SU, Yazar S, MacGregor S, Elder JE, Traboulsi EI, Gottlob I, Hewitt AW, Hunter DG, Mackey DA, Engle EC. Genome-Wide Association Study Identifies a Susceptibility Locus for Comitant Esotropia and Suggests a Parent-of-Origin Effect. Invest Ophthalmol Vis Sci. 2018 08 01; 59(10):4054-4064. View abstract
  20. Minoche AE, Horvat C, Johnson R, Gayevskiy V, Morton SU, Drew AP, Woo K, Statham AL, Lundie B, Bagnall RD, Ingles J, Semsarian C, Seidman JG, Seidman CE, Dinger ME, Cowley MJ, Fatkin D. Genome sequencing as a first-line genetic test in familial dilated cardiomyopathy. Genet Med. 2019 03; 21(3):650-662. View abstract
  21. Morton SU, Belfort MB, Kahlon PS, Hajizadeh Barfjani S, Rudie C, Hashim E, Hansen A, Huh SY. Reducing time to initiation and advancement of enteral feeding in an all-referral neonatal intensive care unit. J Perinatol. 2018 07; 38(7):936-943. View abstract
  22. Jin SC, Homsy J, Zaidi S, Lu Q, Morton S, DePalma SR, Zeng X, Qi H, Chang W, Sierant MC, Hung WC, Haider S, Zhang J, Knight J, Bjornson RD, Castaldi C, Tikhonoa IR, Bilguvar K, Mane SM, Sanders SJ, Mital S, Russell MW, Gaynor JW, Deanfield J, Giardini A, Porter GA, Srivastava D, Lo CW, Shen Y, Watkins WS, Yandell M, Yost HJ, Tristani-Firouzi M, Newburger JW, Roberts AE, Kim R, Zhao H, Kaltman JR, Goldmuntz E, Chung WK, Seidman JG, Gelb BD, Seidman CE, Lifton RP, Brueckner M. Contribution of rare inherited and de novo variants in 2,871 congenital heart disease probands. Nat Genet. 2017 Nov; 49(11):1593-1601. View abstract
  23. Cao S, Smith LL, Padilla-Lopez SR, Guida BS, Blume E, Shi J, Morton SU, Brownstein CA, Beggs AH, Kruer MC, Agrawal PB. Homozygous EEF1A2 mutation causes dilated cardiomyopathy, failure to thrive, global developmental delay, epilepsy and early death. Hum Mol Genet. 2017 09 15; 26(18):3545-3552. View abstract
  24. Morton SU, Prabhu SP, Lidov HGW, Shi J, Anselm I, Brownstein CA, Bainbridge MN, Beggs AH, Vargas SO, Agrawal PB. AIFM1 mutation presenting with fatal encephalomyopathy and mitochondrial disease in an infant. Cold Spring Harb Mol Case Stud. 2017 03; 3(2):a001560. View abstract
  25. Morton SU, Neilan EG, Peake RWA, Shi J, Schmitz-Abe K, Towne M, Markianos K, Prabhu SP, Agrawal PB. Hyperammonemia as a Presenting Feature in Two Siblings with FBXL4 Variants. JIMD Rep. 2017; 35:7-15. View abstract
  26. Schiff SJ, Kiwanuka J, Riggio G, Nguyen L, Mu K, Sproul E, Bazira J, Mwanga-Amumpaire J, Tumusiime D, Nyesigire E, Lwanga N, Bogale KT, Kapur V, Broach JR, Morton SU, Warf BC, Poss M. Separating Putative Pathogens from Background Contamination with Principal Orthogonal Decomposition: Evidence for Leptospira in the Ugandan Neonatal Septisome. Front Med (Lausanne). 2016; 3:22. View abstract
  27. Morton SU, Brodsky D. Fetal Physiology and the Transition to Extrauterine Life. Clin Perinatol. 2016 Sep; 43(3):395-407. View abstract
  28. Morton SU, Smith VC. Treatment options for apnoea of prematurity. Arch Dis Child Fetal Neonatal Ed. 2016 Jul; 101(4):F352-6. View abstract
  29. Morton SU, Joshi M, Savic T, Beggs AH, Agrawal PB. Skeletal muscle microRNA and messenger RNA profiling in cofilin-2 deficient mice reveals cell cycle dysregulation hindering muscle regeneration. PLoS One. 2015; 10(4):e0123829. View abstract
  30. Cordes KR, Sheehy NT, White MP, Berry EC, Morton SU, Muth AN, Lee TH, Miano JM, Ivey KN, Srivastava D. miR-145 and miR-143 regulate smooth muscle cell fate and plasticity. Nature. 2009 Aug 06; 460(7256):705-10. View abstract
  31. Morton SU, Scherz PJ, Cordes KR, Ivey KN, Stainier DY, Srivastava D. microRNA-138 modulates cardiac patterning during embryonic development. Proc Natl Acad Sci U S A. 2008 Nov 18; 105(46):17830-5. View abstract
  32. Fish JE, Santoro MM, Morton SU, Yu S, Yeh RF, Wythe JD, Ivey KN, Bruneau BG, Stainier DY, Srivastava D. miR-126 regulates angiogenic signaling and vascular integrity. Dev Cell. 2008 Aug; 15(2):272-84. View abstract
  33. Mitchell DA, Morton SU, Fernhoff NB, Marletta MA. Thioredoxin is required for S-nitrosation of procaspase-3 and the inhibition of apoptosis in Jurkat cells. Proc Natl Acad Sci U S A. 2007 Jul 10; 104(28):11609-14. View abstract
  34. Anderson FW, Morton SU, Naik S, Gebrian B. Maternal mortality and the consequences on infant and child survival in rural Haiti. Matern Child Health J. 2007 Jul; 11(4):395-401. View abstract
  35. Mitchell DA, Morton SU, Marletta MA. Design and characterization of an active site selective caspase-3 transnitrosating agent. ACS Chem Biol. 2006 Nov 21; 1(10):659-65. View abstract