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Ira J. Bleiweiss, MD
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Professor of Pathology and Laboratory Medicine at the Hospital of the University of Pennsylvania
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Department: Pathology and Laboratory Medicine
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Contact information
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Hospital of the University of Pennsylvania
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32 3400 Spruce St.
Philadelphia, PA 19104
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12 Founders 6
32 3400 Spruce St.
Philadelphia, PA 19104
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Office: 215-662-2569
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32 Fax: 215-615-0463
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Email:
ira.bleiweiss@uphs.upenn.edu
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ira.bleiweiss@uphs.upenn.edu
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Education:
21 7 BA 29 (Biological Basis of Behavior) c
33 University of Pennsylvania, 1980.
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59 St. George's University School of Medicine, Grenada, West Indies, 1984.
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Permanent link21 7 BA 29 (Biological Basis of Behavior) c
33 University of Pennsylvania, 1980.
21 7 MD c
59 St. George's University School of Medicine, Grenada, West Indies, 1984.
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199 Avalos Hernandez SR, Hu T, Dumoff KL, Vickery JM Bleiweiss IJ, Nayak A: Invasive lobular carcinoma with extracellular mucin (ILCEM) presenting at distant metastases and recurrences may exhibit triple negative phenotype. Mod Pathol March 2025 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting.
130 Narasimhamurthy M, Le A, Boruah N, Moses R, Kelly G, Bleiweiss I, Maxwell KN, Nayak A.: Clinicopathologic Features of Breast Tumors in Germline TP53 Variant-Associated Li-Fraumeni Syndrome. Am J Surg Pathol 49: 195-205, March 2025.
158 Nayak A, Demarest K, Bleiweiss IJ, Shah PD: Pathologic response of metaplastic carcinomas to KEYNOTE-522 regimen: correlation with histological subtypes. Mod Pathol March 2025 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting.
1a7 Tondi Resta I, Hu T, Dumoff KL, Avalos Hernandez SR, Vickery JM Bleiweiss IJ, Nayak A: Tubulopapillary carcinomas of the breast: histopathologic features, immunohistochemical staining with p16, p53, and SOX10, and molecular findings. Mod Pathol March 2025 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting.
18f Tondi Resta I, Goldbach MM, Tchou JC, Bleiweiss IJ, Nayak A: Pathologic Features and Residual Cancer Burden (RCB) after Neoadjuvant Endocrine Therapy (NET) in Hormone Receptor Positive Breast Cancer (HR+ BC). Mod Pathol March 2024 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting.
ec Lennerz JK, Pantanowitz L, Amin MB, et al. : Ensuring remote diagnostics for pathologists: an open letter to the US Congress. Nat Med 12: 2453-2455, December 2022.
18b Narasimhamurthy M, Good M, Desai H, Le A, Bleiweiss IJ, Maxwell K, Nayak A: Clinico-pathological features of breast tumors associated with Li-Fraumeni Syndrome. Mod Pathology 35: 196-198, March 2022 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting, Los Angeles, CA, March 2021.
1af Zhao X, Nayak A, Bleiweiss IJ: Does the status of the tumor bed at surgical margins affect local recurrence and overall prognosis in patients undergoing lumpectomy status post neoadjuvant therapy. Mod Pathology 35: 224-225, March 2022 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting, Los Angeles, CA, March 2021.
11a Hawrot K, Shulman LN, Bleiweiss IJ, Wilkie EJ, Jankowitz RC, Laughlin AI: Time to Treatment Initiation for Breast Cancer during the 2020 COVID-19 Pandemic. JCO Oncology Practice 17(9): 534-540, September 2021.
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Selected Publications
66 Tondi Resta I, Nelson ND, Toorens E, Bleiweiss IJ, Nayak A 104 : Mucinous Cystadenocarcinomas of the Breast Exhibit Heterogeneous Genomic Profile as Triple Negative Breast Cancer, Harbor Alterations in PIK3CA, PTEN, AKT1, and GNAS Genes, and May Not Be Indolent. Int J Surg Pathol April 2025.199 Avalos Hernandez SR, Hu T, Dumoff KL, Vickery JM Bleiweiss IJ, Nayak A: Invasive lobular carcinoma with extracellular mucin (ILCEM) presenting at distant metastases and recurrences may exhibit triple negative phenotype. Mod Pathol March 2025 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting.
130 Narasimhamurthy M, Le A, Boruah N, Moses R, Kelly G, Bleiweiss I, Maxwell KN, Nayak A.: Clinicopathologic Features of Breast Tumors in Germline TP53 Variant-Associated Li-Fraumeni Syndrome. Am J Surg Pathol 49: 195-205, March 2025.
158 Nayak A, Demarest K, Bleiweiss IJ, Shah PD: Pathologic response of metaplastic carcinomas to KEYNOTE-522 regimen: correlation with histological subtypes. Mod Pathol March 2025 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting.
1a7 Tondi Resta I, Hu T, Dumoff KL, Avalos Hernandez SR, Vickery JM Bleiweiss IJ, Nayak A: Tubulopapillary carcinomas of the breast: histopathologic features, immunohistochemical staining with p16, p53, and SOX10, and molecular findings. Mod Pathol March 2025 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting.
18f Tondi Resta I, Goldbach MM, Tchou JC, Bleiweiss IJ, Nayak A: Pathologic Features and Residual Cancer Burden (RCB) after Neoadjuvant Endocrine Therapy (NET) in Hormone Receptor Positive Breast Cancer (HR+ BC). Mod Pathol March 2024 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting.
ec Lennerz JK, Pantanowitz L, Amin MB, et al. : Ensuring remote diagnostics for pathologists: an open letter to the US Congress. Nat Med 12: 2453-2455, December 2022.
18b Narasimhamurthy M, Good M, Desai H, Le A, Bleiweiss IJ, Maxwell K, Nayak A: Clinico-pathological features of breast tumors associated with Li-Fraumeni Syndrome. Mod Pathology 35: 196-198, March 2022 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting, Los Angeles, CA, March 2021.
1af Zhao X, Nayak A, Bleiweiss IJ: Does the status of the tumor bed at surgical margins affect local recurrence and overall prognosis in patients undergoing lumpectomy status post neoadjuvant therapy. Mod Pathology 35: 224-225, March 2022 Notes: Poster presented at the United States and Canadian Academy Pathologists Annual Meeting, Los Angeles, CA, March 2021.
11a Hawrot K, Shulman LN, Bleiweiss IJ, Wilkie EJ, Jankowitz RC, Laughlin AI: Time to Treatment Initiation for Breast Cancer during the 2020 COVID-19 Pandemic. JCO Oncology Practice 17(9): 534-540, September 2021.
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