Praveen D Chatani

Surgery Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.

12 publications 2020 – 2024 ORCID

What does Praveen D Chatani research?

Praveen D Chatani studies the outcomes of patients who undergo a surgical procedure known as Cytoreductive Surgery with Heated Intraperitoneal Chemotherapy (CRS/HIPEC). This treatment is used for peritoneal carcinomatosis, a condition where cancer spreads in the abdominal area. By analyzing data from over 5,000 surgeries conducted at 149 hospitals, Chatani looks at whether hospitals that perform more of these surgeries achieve better patient outcomes, such as fewer complications or shorter recovery times.

Key findings

  • There was no significant difference in patient outcomes between low-volume hospitals (4 surgeries/year) and high-volume hospitals (47 surgeries/year).
  • Complications, deaths, hospital stays, and readmissions were similar across hospitals regardless of their surgical volume.
  • Low-volume hospitals did send a higher percentage of patients to intensive care units (ICU) after surgery, but it did not result in worse overall patient outcomes.

Frequently asked questions

Does Dr. Chatani study the effectiveness of cancer surgeries?
Yes, Dr. Chatani studies the outcomes of surgeries for patients with cancer, particularly focusing on heated intraperitoneal chemotherapy.
What is the main conclusion from Dr. Chatani's research?
His research concludes that hospitals do not need to perform a high volume of CRS/HIPEC surgeries to achieve good patient results, as outcomes are similar across different hospital volumes.
Is Dr. Chatani's work relevant to patients undergoing cancer treatment?
Yes, his work is particularly relevant to patients with peritoneal carcinomatosis considering CRS/HIPEC, as it addresses the quality of care they might receive at various hospitals.

Publications in plain English

Does Hospital Operative Volume Influence the Outcomes of Patients After Heated Intraperitoneal Chemotherapy for Peritoneal Carcinomatosis?

2024

Annals of surgical oncology

Chatani PD, Manzella A, Gribkova YY, Ecker BL, Beninato T +3 more

Plain English
Researchers looked at whether hospitals that perform more of a specific cancer surgery (called CRS/HIPEC, which involves removing tumors and bathing the abdomen with heated chemotherapy) get better results than hospitals that do fewer of these operations. They examined over 5,000 procedures across 149 hospitals between 2020 and 2022. They found no meaningful difference in patient outcomes—including complications, deaths, hospital stays, or readmissions—regardless of whether a hospital performed 4 cases a year or 47 cases a year. The only minor difference was that low-volume hospitals sent more patients to the ICU after surgery, but this didn't translate to worse overall results. This matters because it shows that for this particular procedure, hospitals don't need to do hundreds of these surgeries to get good results—experience at a basic level is apparently enough, at least in well-equipped academic medical centers.

PubMed

Cell surface marker-based capture of neoantigen-reactive CD8T-cell receptors from metastatic tumor digests.

2023

Journal for immunotherapy of cancer

Chatani PD, Lowery FJ, Parikh NB, Hitscherich KJ, Yossef R +10 more

Plain English
The study looked at a new way to find T cells that can target cancer cells in patients with advanced tumors. Researchers discovered that out of 31 tested types of T cells, a significant 39.5% were reactive against specific cancer markers. This is important because it provides a quicker and more cost-effective method to identify T cells that can potentially be used in personalized cancer treatments. Who this helps: Patients with advanced cancer who may benefit from tailored immunotherapy treatments.

PubMed

Phenotypic signatures of circulating neoantigen-reactive CD8T cells in patients with metastatic cancers.

2023

Cancer cell

Yossef R, Krishna S, Sindiri S, Lowery FJ, Copeland AR +20 more

Plain English
This study looked at specific immune cells called T-cells in patients with advanced cancers to find out how they react to cancer mutations. Researchers examined blood samples from six patients and found that although these T-cells are less common and less developed than those found directly in tumors, they still can target the same cancer-related mutations. This is important because it shows that blood can be a useful source for monitoring and improving cancer treatments. Who this helps: This benefits patients undergoing cancer treatment by providing new ways to track their immune response and tailor therapies.

PubMed

Molecular signatures of antitumor neoantigen-reactive T cells from metastatic human cancers.

2022

Science (New York, N.Y.)

Lowery FJ, Krishna S, Yossef R, Parikh NB, Chatani PD +37 more

Plain English
This study focused on understanding the specific T cell receptors (TCRs) that fight cancer in metastatic tumors. Researchers found 55 distinct TCRs from 10 tumors, showing that about half of them could recognize cancer-specific targets. This work is important because it helps identify which T cells are most effective in attacking tumors, which could improve cancer treatments using immune therapy. Who this helps: This helps cancer patients by improving immune-based therapies.

PubMed

Adoptive Cellular Therapy with Autologous Tumor-Infiltrating Lymphocytes and T-cell Receptor-Engineered T Cells Targeting Common p53 Neoantigens in Human Solid Tumors.

2022

Cancer immunology research

Kim SP, Vale NR, Zacharakis N, Krishna S, Yu Z +33 more

Plain English
This study looked at a new way to treat certain cancers by focusing on specific mutations in the TP53 gene that are common across different cancer types. Researchers found that in a group of 163 patients, 78 had these mutations and they identified 39 T-cell receptors (TCRs) that could target them. While only two out of twelve patients responded to traditional treatment using tumor-infiltrating lymphocytes, one patient with breast cancer showed a significant and lasting tumor reduction of 55% when treated with a different method that involved a TCR engineered to target a specific TP53 mutation. Who this helps: This can benefit cancer patients, particularly those with tumors that have TP53 mutations.

PubMed

ASO Author Reflections: Predicting Postoperative Resolution of Hypertension in Primary Hyperaldosteronism.

2021

Annals of surgical oncology

Chatani PD, Dominguez DA, Nilubol N

PubMed

Preoperative serum chromogranin-a is predictive of survival in locoregional jejuno-ileal small bowel neuroendocrine tumors.

2021

Surgery

Chatani PD, Aversa JG, McDonald JD, Khan TM, Keutgen XM +1 more

Plain English
This study looked at patients with small bowel neuroendocrine tumors (SB-NET) to see if a blood test measuring chromogranin-A (CgA) could predict survival better than other traditional factors. The research found that patients with CgA levels of 139 ng/mL or higher had a shorter average survival of 6.6 years, compared to 7.6 years for those with lower levels. This matters because it offers a new way to assess a patient's prognosis before surgery, highlighting the importance of the CgA test in guiding treatment decisions. Who this helps: This helps doctors and patients by providing better information on survival outcomes.

PubMed

Local excision and chemoradiation for clinical node-negative anal adenocarcinoma.

2021

Surgical oncology

Chatani PD, Dominguez DA, Aversa JG, Davis JL, Hernandez JM +2 more

Plain English
This study looked at two surgical methods for treating stage II anal adenocarcinoma in patients who also received radiation and chemotherapy. It found that only 40% of patients who had local excision achieved complete cancer removal (R0 resection), compared to 90% for those who underwent a more extensive abdominoperineal resection. However, both groups had similar overall survival rates, meaning the choice of surgical method did not affect how long patients lived. Who this helps: This information helps doctors decide between surgical options for patients with stage II anal adenocarcinoma.

PubMed

The impact of level II evidence on surgical practice: Dual agent bowel prep for elective colorectal surgery.

2021

Surgery

Aversa JG, Chatani PD, Copeland AR, Blakely AM, Davis JL +3 more

PubMed

Mutated RAS: Targeting the "Untargetable" with T Cells.

2020

Clinical cancer research : an official journal of the American Association for Cancer Research

Chatani PD, Yang JC

Plain English
This research paper examines ways to target a group of proteins called RAS, which are often mutated in cancers and are difficult to treat. It reviews different treatment methods, including drugs and cancer vaccines, but highlights the potential of using T cells as a new immunotherapy approach. These modern techniques show promise in effectively targeting the hard-to-treat KRAS mutation, which is linked to poor patient outcomes. Who this helps: This benefits cancer patients, particularly those with tumors caused by KRAS mutations.

PubMed

mRNA vaccine-induced neoantigen-specific T cell immunity in patients with gastrointestinal cancer.

2020

The Journal of clinical investigation

Cafri G, Gartner JJ, Zaks T, Hopson K, Levin N +14 more

Plain English
This study examined a new cancer vaccine that targets unique mutations found in tumors of patients with advanced gastrointestinal cancer. Researchers created a vaccine using mRNA that leads to T cell responses specifically against these mutations, showing it was safe for patients, even though no significant clinical benefits were observed in the four participants. This research is important because it opens the door for future treatments that might be more effective if combined with other therapies. Who this helps: This helps patients with gastrointestinal cancer who may benefit from more personalized vaccination strategies.

PubMed

Molecular Signatures and Their Clinical Utility in Pancreatic Neuroendocrine Tumors.

2020

Frontiers in endocrinology

Chatani PD, Agarwal SK, Sadowski SM

Plain English
This study looked at pancreatic neuroendocrine tumors (PNETs), a type of cancer, and how certain genetic markers can help doctors choose better treatments. Researchers found that by analyzing tumor samples, they could identify specific genetic changes linked to the cancer's behavior and how well patients might respond to different therapies. This is important because it helps customize treatment for patients with advanced cases of this cancer, leading to better outcomes. Who this helps: This benefits patients with pancreatic neuroendocrine tumors and their doctors.

PubMed

Publication data sourced from PubMed . Plain-English summaries generated by AI. Not medical advice.