Alex Ortega Loayza

Assistant Professor

  • 583 Citations
  • 13 h-Index
20062020

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Research Output

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Article
2020

Evaluation of Ixekizumab Treatment for Patients with Pityriasis Rubra Pilaris: A Single-Arm Trial

Haynes, D., Strunck, J. L., Topham, C. A., Ortega-Loayza, A. G., Kent, G., Cassidy, P. B., Hu, R., Choate, K., Wang, Z., Liu, Y. & Greiling, T. M., Jun 2020, In : JAMA Dermatology. 156, 6, p. 668-675 8 p.

Research output: Contribution to journalArticle

2 Scopus citations
2019

A Comprehensive Review of Local Pharmacologic Therapy for Pyoderma Gangrenosum

Baltazar, D., Haag, C., Gupta, A. S., Marzano, A. M. & Ortega Loayza, A., Jun 1 2019, In : Wounds : a compendium of clinical research and practice. 31, 6, p. 151-157 7 p.

Research output: Contribution to journalArticle

1 Scopus citations

Asociación entre la hidradenitis supurativa y el síndrome metabólico: Revisión sistemática y metaanálisis

Translated title of the contribution: Association Between Hidradenitis Suppurativa and Metabolic Syndrome: A Systematic Review and Meta-analysisRodríguez-Zuñiga, M. J. M., García-Perdomo, H. A. & Ortega Loayza, A., May 1 2019, In : Actas Dermo-Sifiliograficas. 110, 4, p. 279-288 10 p.

Research output: Contribution to journalArticle

3 Scopus citations

Carcinoma Erysipeloides From Metastatic Cutaneous Squamous Cell Carcinoma Initially Mistaken for Intralymphatic Histiocytosis

Heath, M. S., Slaught, C., Ortega Loayza, A. & Mengden, S., Jul 1 2019, In : The American Journal of dermatopathology. 41, 7, p. 522-525 4 p.

Research output: Contribution to journalArticle

2 Scopus citations

Characterisation and diagnosis of ulcers in inpatient dermatology consultation services: A multi-centre study

Haynes, D., Hammer, P., Malachowski, S. J., Kaffenberger, B., Yi, J. S., Vera, N., Calhoun, C., Shinohara, M. M., Seminario-Vidal, L., Trinidad, J. C., Keller, J. J. & Ortega-Loayza, A. G., Dec 1 2019, In : International Wound Journal. 16, 6, p. 1440-1444 5 p.

Research output: Contribution to journalArticle

1 Scopus citations
3 Scopus citations

Clinical Features of Neutrophilic Dermatosis Variants Resembling Necrotizing Fasciitis

Sanchez, I. M., Lowenstein, S., Johnson, K. A., Babik, J., Haag, C., Keller, J. J., Ortega Loayza, A., Cohen, J., McCalmont, T. H., Demer, A. M., Mansh, M. D., Hylwa, S. A., Liu, J. & Shinkai, K., Jan 1 2019, In : JAMA Dermatology. 155, 1, p. 79-84 6 p.

Research output: Contribution to journalArticle

10 Scopus citations

Development and Validation of a Risk Prediction Model for In-Hospital Mortality among Patients with Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis - ABCD-10

Noe, M. H., Rosenbach, M., Hubbard, R. A., Mostaghimi, A., Cardones, A. R., Chen, J. K., Cotliar, J., Davis, M. D. P., Dominguez, A., Fox, L. P., Hughey, L. C., Kaffenberger, B. H., Kroshinsky, D., Kwong, B. Y., Miller, D. D., Musiek, A., Ortega Loayza, A., Sharon, V. R., Shinkai, K., Summers, E. M. & 6 others, Wanat, K. A., Wetter, D. A., Worswick, S., Margolis, D. J., Gelfand, J. M. & Micheletti, R. G., Apr 1 2019, In : JAMA Dermatology. 155, 4, p. 448-454 7 p.

Research output: Contribution to journalArticle

12 Scopus citations

Ustekinumab use in patients with severe psoriasis co-infected with hepatitis B and/or C

Siegel, S. A. R., Winthrop, K., Ehst, B. B. & Ortega Loayza, A., Jan 1 2019, (Accepted/In press) In : British Journal of Dermatology.

Research output: Contribution to journalArticle

2 Scopus citations
2018

Antidesmoglein 1 and 3 antibodies in healthy subjects of a population in the Peruvian high amazon

Ramos, W., Díaz, J., Gutierrez, E. L., Lazarte, J. S., Bohnett, M. C., Ronceros, G. & Ortega Loayza, A., Mar 1 2018, In : International Journal of Dermatology. 57, 3, p. 344-348 5 p.

Research output: Contribution to journalArticle

Biologic and small-molecule medications in the management of pyoderma gangrenosum

McKenzie, F., Cash, D., Gupta, A., Cummings, L. W. & Ortega Loayza, A., Jan 1 2018, (Accepted/In press) In : Journal of Dermatological Treatment.

Research output: Contribution to journalArticle

3 Scopus citations

Diversity in dermatology: Roadmap for improvement

Pritchett, E. N., Pandya, A. G., Ferguson, N. N., Hu, S., Ortega Loayza, A. & Lim, H. W., Aug 1 2018, In : Journal of the American Academy of Dermatology. 79, 2, p. 337-341 5 p.

Research output: Contribution to journalArticle

14 Scopus citations

LPIN2 gene mutation in a patient with overlapping neutrophilic disease (pyoderma gangrenosum and aseptic abscess syndrome)

Marzano, A. V., Ortega-Loayza, A. G., Ceccherini, I. & Cugno, M., Mar 2018, In : JAAD Case Reports. 4, 2, p. 120-122 3 p.

Research output: Contribution to journalArticle

Open Access
3 Scopus citations

Oxidative stress in patients with endemic pemphigus foliaceus and healthy subjects with anti-desmoglein 1 antibodies

Gutierrez, E. L., Seminario-Vidal, L., Ronceros, G., Ramos, W., Tello, M. & Ortega-Loayza, A. G., Mar 1 2018, In : Anais brasileiros de dermatologia. 93, 2, p. 212-215 4 p.

Research output: Contribution to journalArticle

Open Access
1 Scopus citations

Pyoderma Gangrenosum of the Scalp: A Rare Clinical Variant

Gupta, A. S., Nunley, J. R., Feldman, M. J. & Ortega Loayza, A., Feb 1 2018, In : Wounds : a compendium of clinical research and practice. 30, 2, p. E16-E20

Research output: Contribution to journalArticle

2 Scopus citations

Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis: A Multicenter Retrospective Study of 377 Adult Patients from the United States

Micheletti, R. G., Chiesa-Fuxench, Z., Noe, M. H., Stephen, S., Aleshin, M., Agarwal, A., Boggs, J., Cardones, A. R., Chen, J. K., Cotliar, J., Davis, M. D. P., Dominguez, A., Fox, L. P., Gordon, S., Hamrick, R., Ho, B., Hughey, L. C., Jones, L. M., Kaffenberger, B. H., Kindley, K. & 22 others, Kroshinsky, D., Kwong, B. Y., Miller, D. D., Mostaghimi, A., Musiek, A., Ortega-Loayza, A. G., Patel, R., Posligua, A., Rani, M., Saluja, S., Sharon, V. R., Shinkai, K., St. John, J., Strickland, N., Sun, N., Wanat, K. A., Wetter, D. A., Worswick, S., Yang, C., Margolis, D. J., Gelfand, J. M. & Rosenbach, M., Nov 2018, In : Journal of Investigative Dermatology. 138, 11, p. 2315-2321 7 p.

Research output: Contribution to journalArticle

20 Scopus citations

Treatment of an ulcerated hemangioma with dehydrated human amnion/chorion membrane allograft

Bacik, L., Dhossche, J., Ortega Loayza, A. & Funk, T., Oct 1 2018, In : JAAD Case Reports. 4, 9, p. 890-892 3 p.

Research output: Contribution to journalArticle

Open Access
2 Scopus citations

Update on calciphylaxis etiopathogenesis, diagnosis, and management

Khanna, U., Dominguez, A., Keller, J., Kroshinsky, D., Ortega Loayza, A., Strowd, L. & Micheletti, R. G., Dec 1 2018, In : Cutis. 102, 6, p. 395-400 6 p.

Research output: Contribution to journalArticle

Wound care for Stevens-Johnson syndrome and toxic epidermal necrolysis

Castillo, B., Vera, N., Ortega Loayza, A. & Seminario-Vidal, L., Oct 1 2018, In : Journal of the American Academy of Dermatology. 79, 4, p. 764-767.e1

Research output: Contribution to journalArticle

6 Scopus citations
2017

Incidental skin malignancies in teledermatology and in-person cohorts in the Veterans Affairs Health System

Keleshian, V., Ortega Loayza, A. & Tarkington, P., Nov 1 2017, In : Journal of the American Academy of Dermatology. 77, 5, p. 965-966 2 p.

Research output: Contribution to journalArticle

Ocular pyoderma gangrenosum: A systematic review

Gupta, A. S. & Ortega Loayza, A., Mar 1 2017, In : Journal of the American Academy of Dermatology. 76, 3, p. 512-518 7 p.

Research output: Contribution to journalArticle

5 Scopus citations

Somatic symptom disorder in dermatology

Levenson, J. L., Sharma, A. A. & Ortega-Loayza, A. G., May 2017, In : Clinics in Dermatology. 35, 3, p. 246-251 6 p.

Research output: Contribution to journalArticle

3 Scopus citations
2016

Aortic endograft and epithelioid sarcoma: A random association or causality?

Tiwari, N., Krishna, S. & Ortega Loayza, A., Jul 1 2016, In : Journal of Drugs in Dermatology. 15, 7, p. 897-899 3 p.

Research output: Contribution to journalArticle

1 Scopus citations

Calciphylaxis with evidence of hypercoagulability successfully treated with unfractionated heparin: A multidisciplinary approach

Carter, A., Ortega Loayza, A., Barrett, J. & Nunley, J. R., Apr 1 2016, In : Clinical and Experimental Dermatology. 41, 3, p. 275-278 4 p.

Research output: Contribution to journalArticle

2 Scopus citations

Pyoderma gangrenosum and pregnancy: An example of abnormal inflammation and challenging treatment

Steele, R. B., Nugent, W. H., Braswell, S. F., Frisch, S., Ferrell, J. & Ortega Loayza, A., Jan 1 2016, In : British Journal of Dermatology. 174, 1, p. 77-87 11 p.

Research output: Contribution to journalArticle

15 Scopus citations

Scattered targetoid papules and mucosal erosions after vaccination

Leib, A. E., Steele, R. B. & Ortega Loayza, A., Oct 1 2016, In : Journal of the American Academy of Dermatology. 75, 4, p. e129-e130

Research output: Contribution to journalArticle

2015

Molecular characterization and antifungal susceptibility of Cryptococcus neoformans strains collected from a single institution in Lima, Peru

Bejar, V., Tello, M., García, R., Guevara, J. M., Gonzales, S., Vergaray, G., Valencia, E., Abanto, E., Ortega-Loayza, A. G., Hagen, F. & Gutierrez, E. L., Apr 1 2015, In : Revista Iberoamericana de Micologia. 32, 2, p. 88-92 5 p.

Research output: Contribution to journalArticle

7 Scopus citations

Pyoderma gangrenosum after open heart surgery: A rare and challenging postoperative complication

Kostopoulos, T. C., Ortega-Loayza, A. G., Francis, J., Maiberger, M. P., Brinster, N. K., Brinster, D. R., Feldman, M. J. & Nunley, J. R., Feb 1 2015, In : Chirurgia (Turin). 28, 1, p. 37-41 5 p.

Research output: Contribution to journalArticle

2 Scopus citations

Vulvar edema and weight loss in a pediatric patient

Gupta, A. S., O'Connor, P. W. & Ortega-Loayza, A. G., Dec 2015, In : Journal of the American Academy of Dermatology. 73, 6, p. e193-e194

Research output: Contribution to journalArticle

2014

A rapidly progressive and fatal case of atypical acute generalized exanthematous pustulosis

Krishna, S., Ortega-Loayza, A., Malakouti, N. & Brinster, N., Sep 2014, In : Journal of the American Academy of Dermatology. 71, 3, p. e89-e90

Research output: Contribution to journalArticle

Open Access
7 Scopus citations
2013

Blastomicose cutânea: Um sinal de doença sistêmica

Translated title of the contribution: Cutaneous blastomycosis: A clue to a systemic diseaseOrtega-Loayza, A. G. & Nguyen, T., 2013, In : Anais brasileiros de dermatologia. 88, 2, p. 287-289 3 p.

Research output: Contribution to journalArticle

Open Access
6 Scopus citations

Crusted scabies and multiple dosages of ivermectin

Ortega-Loayza, A. G., McCall, C. O. & Nunley, J. R., May 1 2013, In : Journal of Drugs in Dermatology. 12, 5, p. 584-585 2 p.

Research output: Contribution to journalArticle

12 Scopus citations

Cutaneous blastomycosis

Ortega Loayza, A. & McCall, C. O., Mar 7 2013, In : New England Journal of Medicine. 368, 10

Research output: Contribution to journalArticle

2 Scopus citations

Endemic pemphigus foliaceus in the Peruvian Amazon

Ortega-Loayza, A. G., Ramos, W., Gutierrez, E. L., Jimenez, G., Rojas, I. & Galarza, C., Aug 2013, In : Clinical and Experimental Dermatology. 38, 6, p. 594-600 7 p.

Research output: Contribution to journalArticle

8 Scopus citations

Microarray technique, analysis, and applications in dermatology

Villaseñor-Park, J. & Ortega-Loayza, A. G., Apr 1 2013, In : Journal of Investigative Dermatology. 133, 4

Research output: Contribution to journalArticle

Open Access
12 Scopus citations
2012

Historical notes on endemic pemphigus in South America

Chacón, G. R., Ortega-Loayza, A. G. & Cyr, R. M., Apr 1 2012, In : International Journal of Dermatology. 51, 4, p. 477-481 5 p.

Research output: Contribution to journalArticle

3 Scopus citations

Molecular basis for selected inherited skin disorders

Krishna, S. M., Sprigle, A. & Ortega-Loayza, A. G., Nov 1 2012, In : Journal of Drugs in Dermatology. 11, 11, p. 1361-1363 3 p.

Research output: Contribution to journalArticle

Necrolytic acral erythema

Grauel, E., Stechschulte, S., Ortega-Loayza, A. G., Krishna, S. M. & Nunley, J. R., Nov 1 2012, In : Journal of Drugs in Dermatology. 11, 11, p. 1370-1371 2 p.

Research output: Contribution to journalArticle

2 Scopus citations

Pênfigo endêmico na amazônia peruana: Epidemiologia e fatores de risco para o desenvolvimento de complicações durante o tratamento

Translated title of the contribution: Endemic pemphigus in the Peruvian Amazon: Epidemiology and risk factors for the development of complications during treatmentRamos, W., Chacon, G. R., Galarza, C., Gutierrez, E. L., Smith, M. E. & Ortega-Loayza, A. G., Nov 2012, In : Anais brasileiros de dermatologia. 87, 6, p. 838-845 8 p.

Research output: Contribution to journalArticle

Open Access
9 Scopus citations
2011

Miliária 'rash' após neutropenia febril e quimioterapia de indução para a leucemia mielóide aguda

Translated title of the contribution: Miliaria-rash after neutropenic fever and induction chemotherapy for acute myelogenous leukemiaNguyen, T. A., Ortega-Loayz, A. G. & Stevens, M. P., 2011, In : Anais brasileiros de dermatologia. 86, 4 SUPPL. 1, p. 104-106 3 p.

Research output: Contribution to journalArticle

Open Access
5 Scopus citations
2010

Aspirin desensitization/challenge in 3 patients with unstable angina

Ortega-Loayza, A. G., Raza, S., Minisi, A. J., Topaz, O., Heller, A. & Jovin, I. S., Nov 2010, In : American Journal of the Medical Sciences. 340, 5, p. 418-420 3 p.

Research output: Contribution to journalArticle

14 Scopus citations

Characterization of Staphylococcus aureus cutaneous infections in a pediatric dermatology tertiary health care outpatient facility

Ortega-Loayza, A. G., Diamantis, S. A., Gilligan, P. & Morrell, D. S., May 1 2010, In : Journal of the American Academy of Dermatology. 62, 5, p. 804-811 8 p.

Research output: Contribution to journalArticle

13 Scopus citations

Cutaneous manifestations of internal malignancies in a tertiary health care hospital of a developing country

Ortega-Loayza, A. G., Ramos, W., Gutierrez, E. L., De Paz, P. C., Bobbio, L. & Galarza, C., 2010, In : Anais brasileiros de dermatologia. 85, 5, p. 736-742 7 p.

Research output: Contribution to journalArticle

Open Access
15 Scopus citations

Facial porokeratosis: A series of six patients

Gutierrez, E. L., Galarza, C., Ramos, W., Tello, M., De Paz, P. C., Bobbio, L., Barquinero, A., Ronceros, G. & Ortega-Loayza, A. G., Aug 1 2010, In : Australasian Journal of Dermatology. 51, 3, p. 191-194 4 p.

Research output: Contribution to journalArticle

13 Scopus citations

Influence of climatic factors on the medical attentions of dermatologic diseases in a hospital of Lima, Peru

Gutierrez, E. L., Ramos, W., Smith, M. E., Galarza, C., Mendoza, M. & Ortega-Loayza, A. G., 2010, In : Anais brasileiros de dermatologia. 85, 4, p. 461-468 8 p.

Research output: Contribution to journalArticle

Open Access
15 Scopus citations

Meningoencefalite causada por Cryptococcus gattii em um paciente HIV-negativo procedente dos Andes Peruanos

Translated title of the contribution: Cryptococcus gattii meningoencephalitis in an HIV-negative patient from the Peruvian AndesGutierrez, E. L., Valqui, W., Vilchez, L., Evangelista, L., Crispin, S., Tello, M., Ñavincopa, M., Béjar, V., Gonzáles, J. & Ortega-Loayza, A. G., 2010, In : Revista da Sociedade Brasileira de Medicina Tropical. 43, 4, p. 469-471 3 p.

Research output: Contribution to journalArticle

Open Access
3 Scopus citations

Night blindness in a patient with acquired immunodeficiency syndrome

Shukla, A., Ortega-Loayza, A. G., Childress, C. G. & Stevens, M., May 1 2010, In : American Journal of the Medical Sciences. 339, 5, 1 p.

Research output: Contribution to journalArticle

1 Scopus citations

Skin diseases in the Peruvian Amazonia

Gutierrez, E. L., Galarza, C., Ramos, W., Tello, M., Jiménez, G., Ronceros, G., Chía, H., Hurtado, J. & Ortega-Loayza, A. G., Jul 2010, In : International Journal of Dermatology. 49, 7, p. 794-800 7 p.

Research output: Contribution to journalArticle

12 Scopus citations
2009

Cutaneous acanthamebiasis infection in immunocompetent and immunocompromised patients

Galarza, C., Ramos, W., Gutierrez, E. L., Ronceros, G., Teran, M., Uribe, M., Ñavincopa, M. & Ortega-Loayza, A. G., Dec 2009, In : International Journal of Dermatology. 48, 12, p. 1324-1329 6 p.

Research output: Contribution to journalArticle

Open Access
17 Scopus citations

Gestante con pénfigo foliáceo endémico y producto libre de enfermedad. Caso clínico

Translated title of the contribution: Endemic pemphigus foliaceus in a pregnant woman. Report of one caseGalarza, C., Gutiérrez, E. L., Ramos, W., Tello, M., Ronceros, G., Alvizuri, S., Valverde, F. & Ortega-Loayza, A. G., Nov 26 2009, In : Revista Medica de Chile. 137, 9, p. 1205-1208 4 p.

Research output: Contribution to journalArticle

3 Scopus citations