Practice Location

1240 JESSE JEWELL PKWY SE
GAINESVILLE, GA 30501-3861

Phone: (770) 287-0031

What does ANDRE KALLAB research?

Dr. Kallab studies various aspects of cancer treatment, particularly in breast cancer and colorectal cancer. He investigates ways to enhance the effectiveness of existing treatments, such as using a combination of drugs to better combat estrogen receptor-positive breast cancer. Additionally, he examines how to gather important genetic information from cancer patients through blood tests, allowing doctors to tailor treatments even when traditional tissue biopsies are not feasible. This research has significant implications for advancing personalized medicine in oncology.

Key findings

  • In 80% of colorectal cancer cases, tumor DNA was detected in blood tests, achieving 100% accuracy when samples were collected within 30 days of each other.
  • The combination therapy of 4-hydroxytamoxifen and mifepristone significantly reduced retinoblastoma protein levels, enhancing the effectiveness against human breast cancer compared to monotherapy.
  • A patient with refractory aggressive diffuse large B-cell lymphoma achieved over 2.5 years of cancer-free status after receiving Rituximab, indicating its potential for durable remission.

Frequently asked questions

Does Dr. Kallab study colorectal cancer?
Yes, he examines blood tests for tumor DNA in colorectal cancer patients to improve treatment strategies.
What treatments has Dr. Kallab researched?
He has explored combination therapies for breast cancer and the use of Rituximab for aggressive lymphoma.
Is Dr. Kallab's work relevant to breast cancer patients?
Yes, his research on combination therapies targets estrogen receptor-positive breast cancer patients.
Can blood tests replace biopsies in cancer diagnosis?
Dr. Kallab's research suggests that blood tests can reliably provide genomic information, offering a non-invasive alternative when biopsies are difficult.

Publications in plain English

Genomic profiling of cell-free circulating tumor DNA in patients with colorectal cancer and its fidelity to the genomics of the tumor biopsy.

2019

Journal of gastrointestinal oncology

Li G, Pavlick D, Chung JH, Bauer T, Tan BA +18 more

Plain English
In this study, researchers looked at blood samples from 96 patients with colorectal cancer to see if the genetic information they could find in the blood matched what they found in the patients' tumor tissue samples. They discovered that in 80% of cases, they detected tumor DNA in the blood, and when the tissue and blood samples were collected less than 30 days apart, the accuracy of matching the genetic information was perfect at 100%. This matters because it shows that blood tests can provide reliable insights into a patient's cancer, helping doctors tailor treatments when getting a tissue biopsy isn't possible. Who this helps: This helps patients with colorectal cancer, especially those who cannot undergo a tissue biopsy.

PubMed

Downregulation of retinoblastoma protein is involved in the enhanced cytotoxicity of 4-hydroxytamoxifen plus mifepristone combination therapy versus antiestrogen monotherapy of human breast cancer.

2007

International journal of oncology

Schoenlein PV, Hou M, Samaddar JS, Gaddy VT, Thangaraju M +5 more

Plain English
This study looked at how a combination of two cancer treatments, 4-hydroxytamoxifen (an antiestrogen) and mifepristone (an antiprogestin), affects human breast cancer cells. The researchers found that using both drugs together made the cancer cells die more effectively compared to using either drug alone; specifically, the combination therapy led to a significant reduction in the retinoblastoma protein (Rb) levels, which is linked to promoting cell death. This is important because it shows that combining these treatments could boost their effectiveness against estrogen receptor-positive breast cancer. Who this helps: Patients with estrogen receptor-positive breast cancer may benefit from this combination therapy.

PubMed

Rheumatoid arthritis and immune thrombocytopenia: a report of two cases.

2002

Clinical rheumatology

Ustun C, Kallab A, Loebl D, Jillela A, Majewski B +2 more

PubMed

Rituximab provides durable remission in a patient with refractory aggressive diffuse B-cell lymphoma failing salvage chemotherapy.

2002

Leukemia & lymphoma

Robach E, Ustun C, Kallab A, Burgess RE, Jillella AP

Plain English
This study looked at a 43-year-old woman with a severe form of cancer called aggressive diffuse large B-cell lymphoma (DLCL), who did not respond to standard treatments. After she received 8 treatments with a drug called Rituximab, she has been cancer-free for over 2.5 years. This shows that Rituximab can provide long-lasting remission for patients whose cancer does not respond to other therapies. Who this helps: This finding benefits patients with refractory aggressive diffuse large B-cell lymphoma.

PubMed

Frequent Co-Authors

Gerald Li Dean Pavlick Jon H Chung Todd Bauer Bradford A Tan Julio Peguero Patrick Ward Jose Bufill Anthony Hoffman Ahad Sadiq

Physician data sourced from the NPPES NPI Registry . Publication data from PubMed . Plain-English summaries generated by AI. Not medical advice.