Luis M. Franco, M.D.

Stadtman Investigator

Chief, Functional Immunogenomics Section

Summary

Luis M. Franco, M.D., joined the Systemic Autoimmunity Branch at the NIAMS in 2019. He received his medical degree from the Javeriana University School of Medicine in Bogotá, Colombia. He completed a residency in internal medicine and a fellowship in clinical genetics at Baylor College of Medicine in Houston. From 2009 to 2014, Dr. Franco was assistant professor in the Department of Molecular and Human Genetics and the Department of Medicine at Baylor College of Medicine. From 2014 to 2019, he was assistant clinical investigator at the Laboratory of Immune System Biology at the NIAID.

Research Statement

The Franco lab seeks to apply functional genomics approaches to the solution of medically important questions related to the immune system. A major area of research involves the molecular dissection of the genomic effects of glucocorticoids, a class of drugs that has been used to treat autoimmune and inflammatory diseases for 70 years but remains poorly understood. This work spans the spectrum from in vitro studies of single cells to in vivo studies with human subjects. The lab is also developing molecular methods for screening drug candidates in human immune cells and has developed assays for the diagnosis of genetic diseases of the immune system that are in use at the NIH Clinical Center.

In addition to his research activities, Dr. Franco is an active clinician who sees patients with known or suspected genetic diseases as part of the NIAID/NIAMS Clinical Genetics Service at the NIH Clinical Center.  

Scientific Publications

Glucocorticoids regulate the human non-coding genome.

Tran T, Kwiat R, Cao Q, Kuhn S, Howe KN, Gadkari M, Franco LM
bioRxiv.
2025 Dec 18;
pii: 2025.12.18.695158. doi: 10.64898/2025.12.18.695158
PMID: 41446089

Endogenous glucocorticoids and human immunity: Time to revisit old dogmas.

Bhatt B, Franco LM
Semin Immunol.
2025 Jun;
78().
doi: 10.1016/j.smim.2025.101949
PMID: 40203674

Topical Steroid Withdrawal Is a Targetable Excess of Mitochondrial NAD.

Shobnam N, Ratley G, Saksena S, Yadav M, Chaudhary PP, Sun AA, Howe KN, Gadkari M, Franco LM, Ganesan S, McCann KJ, Hsu AP, Kanakabandi K, Ricklefs S, Lack J, Yu W, Similuk M, Walkiewicz MA, Gardner DD, Barta K, Tullos K, Myles IA
J Invest Dermatol.
2025 Aug;
145(8).
doi: 10.1016/j.jid.2024.11.026
PMID: 40088241

hcHCR: High-Throughput Single-Cell Imaging of RNA in Human Primary Immune Cells.

Gadkari M, Sun J, Carcamo A, Fraser I, Franco LM, Pegoraro G
Methods Mol Biol.
2024;
2784().
doi: 10.1007/978-1-0716-3766-1_8
PMID: 38502482

GCgx: transcriptome-wide exploration of the response to glucocorticoids.

Cao Q, Boo Irizarry Y, Yazhuk S, Tran T, Gadkari M, Franco LM
J Mol Endocrinol.
2021 Dec 10;
68(2).
doi: 10.1530/JME-21-0107
PMID: 34787097

Glucocorticoid-induced eosinopenia results from CXCR4-dependent bone marrow migration.

Hong SG, Sato N, Legrand F, Gadkari M, Makiya M, Stokes K, Howe KN, Yu SJ, Linde NS, Clevenger RR, Hunt T, Hu Z, Choyke PL, Dunbar CE, Klion AD, Franco LM
Blood.
2020 Dec 3;
136(23).
doi: 10.1182/blood.2020005161
PMID: 32659786

Immune regulation by glucocorticoids can be linked to cell type-dependent transcriptional responses.

Franco LM, Gadkari M, Howe KN, Sun J, Kardava L, Kumar P, Kumari S, Hu Z, Fraser IDC, Moir S, Tsang JS, Germain RN
J Exp Med.
2019 Feb 4;
216(2).
doi: 10.1084/jem.20180595
PMID: 30674564

Glucocorticoid-induced eosinopenia in humans can be linked to early transcriptional events.

Khoury P, Stokes K, Gadkari M, Makiya MA, Legrand F, Hu Z, Klion A, Franco LM
Allergy.
2018 Oct;
73(10).
doi: 10.1111/all.13497
PMID: 29885264

Education

Pontificia Javeriana University School of Medicine, Bogotá, Colombia
M.D.

Experience

Assistant Clinical Investigator: Laboratory of Immune System Biology
NIAID, NIH, Bethesda, MD, U.S.A.

Assistant Professor
Department of Molecular and Human Genetics and Department of Medicine. Baylor College of Medicine, Houston, TX, U.S.A.

Clinical Genetics Fellowship
Baylor College of Medicine, Houston, TX, U.S.A.

Internal Medicine Residency
Baylor College of Medicine, Houston, TX, U.S.A.

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