Practice Location

2001 W 86TH ST
INDIANAPOLIS, IN 46260-1902

Phone: (317) 338-4673

What does BASSEM RAZZOUK research?

Dr. Razzouk studies various aspects of childhood cancer, especially acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL). He explores how genetic changes in leukemia cells can impact survival rates and the effectiveness of treatments. His research has delved into how early responses to treatment can predict long-term outcomes, helping doctors tailor therapies for children. Additionally, he has investigated the pharmacokinetics of cancer drugs, ensuring proper dosages are used for pediatric versus adult patients. His work also includes evaluating the effectiveness of surgeries and diagnostic tools in managing pediatric cancers, which is crucial for optimizing care.

Key findings

  • In a study of 403 children with relapsed AML, a specific genetic change was linked to a 4-year overall survival rate of 71%, while other patterns resulted in survival rates of only 17% to 22%.
  • Among 338 patients in a study on early treatment responses, 77% showed low leukemia levels on treatment days 15 and 28, with only 14% survival for those with more than 20% leukemia cells at 28 days.
  • In research involving 200 children, routine chest X-rays for pneumonia detection were only useful in 5 cases, highlighting the need for selective use of this diagnostic tool.
  • Of the 42 pediatric patients treated with clofarabine for relapsed AML, 26% showed a positive response, with average response duration of 20 weeks, aiding some in receiving life-saving stem cell transplants.
  • In a study of 258 patients with AML, those with deletion 7q had a 5-year survival rate of 51%, compared to just 30% for those with monosomy 7.

Frequently asked questions

Does Dr. Razzouk study leukemia in children?
Yes, he focuses specifically on acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL) in pediatric patients.
What treatments has Dr. Razzouk researched for childhood cancer?
He has researched treatments including the use of the drug clofarabine and has examined how early treatment responses can inform better care strategies.
Is Dr. Razzouk's work relevant to children with solid tumors?
Yes, he has studied the effectiveness of limb salvage surgery for children with malignant bone tumors, assisting in their recovery and maintaining limb function.
How does genetic information impact treatment decisions in pediatric leukemia?
Dr. Razzouk's research shows that specific genetic markers can significantly affect survival rates, allowing doctors to personalize treatment plans based on these factors.
Can Dr. Razzouk's research help improve survival rates for children with cancer?
Absolutely, his studies aim to enhance treatment strategies and patient outcomes, demonstrated by notably improved survival statistics in various studies.

Publications in plain English

Prognostic significance of chromosomal abnormalities at relapse in children with relapsed acute myeloid leukemia: A retrospective cohort study of the Relapsed AML 2001/01 Study.

2022

Pediatric blood & cancer

Klein K, Beverloo HB, Zimmermann M, Raimondi SC, von Neuhoff C +20 more

Plain English
This study looked at the genetic changes in children with relapsed acute myeloid leukemia (AML) to understand how these changes affect survival rates. The researchers analyzed data from 403 out of 569 patients and found that certain genetic patterns at the time of relapse were linked to better survival outcomes, such as a 4-year overall survival rate of 71% for one specific genetic change. Conversely, other patterns were associated with poor outcomes, with lower survival rates around 17% to 22%, highlighting the need for personalized treatment strategies based on these genetic factors. Who this helps: This research benefits doctors and healthcare providers in treating children with relapsed AML more effectively.

PubMed

The prognostic significance of early treatment response in pediatric relapsed acute myeloid leukemia: results of the international study Relapsed AML 2001/01.

2014

Haematologica

Creutzig U, Zimmermann M, Dworzak MN, Gibson B, Tamminga R +14 more

Plain English
This study examined how well early treatment responses predict outcomes for children with relapsed acute myeloid leukemia (AML). Researchers looked at bone marrow samples from 338 patients and found that after treatment, 77% had low levels of leukemia cells on days 15 and 28. However, patients assessed at 28 days with the highest counts of leukemia cells had notably lower survival rates, with only 14% surviving four years if the count was above 20%, compared to 52% for those with 5% or fewer cells. This information is important because it may help doctors decide on the best treatment approach based on how well a child responds early on. Who this helps: This helps patients and their doctors by providing clearer guidance on treatment options based on early response rates.

PubMed

Diagnostic value of routine chest radiography in febrile, neutropenic children for early detection of pneumonia and mould infections.

2012

Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer

Roberts SD, Wells GM, Gandhi NM, York NR, Maron G +4 more

Plain English
This study looked at whether routine chest X-rays are helpful in finding pneumonia and mould infections in children with cancer who have a fever and low white blood cell counts. Out of 200 children reviewed, only 5 showed signs of pneumonia on the X-ray, and it only changed treatment for one child. Additionally, for mould infections identified over 36 years, the X-ray only helped with two cases. This means routine chest X-rays are not useful unless the children show actual signs of lung problems. Who this helps: This helps doctors make more informed decisions about when to use chest X-rays for children undergoing cancer treatment.

PubMed

Population pharmacokinetics of clofarabine and its metabolite 6-ketoclofarabine in adult and pediatric patients with cancer.

2011

Cancer chemotherapy and pharmacology

Bonate PL, Cunningham CC, Gaynon P, Jeha S, Kadota R +5 more

Plain English
This study looked at how the cancer drug clofarabine and its byproduct, 6-ketoclofarabine, behave in both children and adults with cancer. Researchers found that the drug is quickly absorbed and the time it stays in the body varies based on factors like age and kidney function; for example, a 3-year-old child absorbs clofarabine more efficiently than an 82-year-old adult given the same dose. Understanding these differences is important because it helps doctors adjust dosages appropriately, especially in patients with kidney issues, ensuring everyone gets the most effective treatment. Who this helps: This helps patients receiving cancer treatment, especially children and elderly patients.

PubMed

Phase II study of clofarabine in pediatric patients with refractory or relapsed acute myeloid leukemia.

2009

Journal of clinical oncology : official journal of the American Society of Clinical Oncology

Jeha S, Razzouk B, Rytting M, Rheingold S, Albano E +11 more

Plain English
This study looked at the drug clofarabine in children with acute myeloid leukemia (AML) that didn't respond to previous treatments. Out of 42 patients, 26% had a positive response to the drug, with responses lasting an average of 20 weeks. Some patients were able to receive a stem cell transplant after treatment, which can improve their chances of survival. Who this helps: This helps pediatric patients with difficult-to-treat AML and their doctors.

PubMed

Team management, twinning, and telemedicine in retinoblastoma: a 3-tier approach implemented in the first eye salvage program in Jordan.

2008

Pediatric blood & cancer

Qaddoumi I, Nawaiseh I, Mehyar M, Razzouk B, Haik BG +4 more

Plain English
This study looked at how a telemedicine program helped treat children with retinoblastoma (a type of eye cancer) in Jordan. The program involved collaboration between doctors in Jordan and the St. Jude Children's Research Hospital in the U.S. Among 33 children studied, 25% of eyes needed to be removed in new cases of bilateral retinoblastoma, and there was no mortality reported. This is important because it shows that providing specialized care through remote consultations can lead to better treatment outcomes in developing countries. Who this helps: This helps patients with retinoblastoma and their families by providing access to better care.

PubMed

Limb salvage surgery for children and adolescents with malignant bone tumors in a developing country.

2008

Pediatric blood & cancer

Haidar R, Sagghieh S, Muwakitt S, Mumtaz G, Akel S +9 more

Plain English
This study looked at how effective limb salvage surgery is for young people in Lebanon who have serious bone tumors. Over a five-year period, 30 children underwent these surgeries and with an average follow-up time of about 31 months, 20 of them are no longer in treatment, while 4 have unfortunately died due to their illness. The surgeries were successful overall, with all patients maintaining good use of their limbs, and the findings could guide similar programs in other developing countries. Who this helps: This helps children and teens with bone cancer and the doctors treating them.

PubMed

Monosomy 7 and deletion 7q in children and adolescents with acute myeloid leukemia: an international retrospective study.

2007

Blood

Hasle H, Alonzo TA, Auvrignon A, Behar C, Chang M +26 more

Plain English
This study looked at the genetic changes called monosomy 7 and deletion 7q in children with acute myeloid leukemia (AML), analyzing data from 258 patients. The researchers found that kids with monosomy 7 had a lower chance of reaching complete remission (61%) compared to those with deletion 7q, who had a much higher rate (89%). Overall, the 5-year survival rate was 39%, but it was 51% for patients with deletion 7q, compared to just 30% for those with monosomy 7. Who this helps: This research benefits doctors and healthcare teams by helping them better understand which genetic factors can impact treatment outcomes for children with AML.

PubMed

Primary malignant peripheral nerve sheath tumor of the lung in a young child without neurofibromatosis type 1.

2006

Pediatric blood & cancer

Muwakkit SA, Rodriguez-Galindo C, El Samra AI, Khoury R, Akel SR +3 more

Plain English
This study looked at a rare type of lung tumor in a young child that is usually seen in children with a condition called neurofibromatosis 1 (NF1). The researchers found that this child's tumor, called a malignant peripheral nerve sheath tumor (MPNST), is similar in appearance to another type of tumor known as a pleuropulmonary blastoma. Recognizing that MPNST can occur in children without NF1 is important for helping doctors accurately diagnose lung tumors in kids. Who this helps: This helps doctors and healthcare providers identify and treat lung tumors in children more effectively.

PubMed

Secondary axillary node carcinoma following treatment of Hodgkin's disease.

2004

The breast journal

Said FE, Shami P, Razzouk B, Soutou B, Brihi E +3 more

PubMed

Population pharmacokinetics of clofarabine, a second-generation nucleoside analog, in pediatric patients with acute leukemia.

2004

Journal of clinical pharmacology

Bonate PL, Craig A, Gaynon P, Gandhi V, Jeha S +7 more

Plain English
This study focused on how clofarabine, a cancer medication, behaves in the bodies of children with acute leukemia. Researchers found that the way clofarabine is cleared from the body and its concentration levels can vary significantly based on the children's body weight and white blood cell counts. Specifically, they noted that a typical patient would have clofarabine levels resulting in effective treatment, and adjustments to doses should be based on body size to ensure the best outcomes. Who this helps: This benefits pediatric patients undergoing treatment for acute leukemia.

PubMed

Report of a child with vitiligo and Evans syndrome.

2003

Journal of pediatric hematology/oncology

Muwakkit S, Locatelli F, Abboud M, Razzouk B, Wilimas J

PubMed

Incidence of anemia in children with solid tumors or Hodgkin disease.

2002

Journal of pediatric hematology/oncology

Hockenberry MJ, Hinds PS, Barrera P, Billups C, Rodriguez-Galindo C +3 more

Plain English
This study looked at how many children with certain types of cancer, like neuroblastoma and Hodgkin disease, had anemia when they were first diagnosed. It found that between 51% and 74% of these children were anemic, which means they had lower hemoglobin levels than normal for their age and sex. Understanding how common anemia is in these kids is important because it could affect their treatment and quality of life. Who this helps: This helps patients and doctors by highlighting a common issue in pediatric cancer care.

PubMed

Second malignancy after treatment of childhood non-Hodgkin lymphoma.

2001

Cancer

Leung W, Sandlund JT, Hudson MM, Zhou Y, Hancock ML +7 more

Plain English
This study looked at the risk of developing a second cancer in children who were treated for non-Hodgkin lymphoma (NHL) at St. Jude Children's Research Hospital. Out of 497 patients, 16 developed a second cancer, which is about 10 times higher than what you'd expect in the general population. The risk of a second cancer increased over time, reaching nearly 5% after 20 years, particularly among those treated for lymphoblastic lymphoma, and certain treatments were linked to a higher risk of secondary acute myeloid leukemia. Who this helps: This information helps doctors and patients understand the long-term risks of treatment for childhood NHL.

PubMed

Prognostic factors in infants with acute myeloid leukemia.

2000

Leukemia

Pui CH, Raimondi SC, Srivastava DK, Tong X, Behm FG +5 more

Plain English
This study looked at how different factors might affect the treatment outcomes for infants with acute myeloid leukemia (AML), analyzing data from 299 children. Researchers found that infants under 24 months had specific characteristics linked to a better prognosis, such as having certain types of leukemia (70% of these younger children had M4 or M5 leukemia) and specific genetic markers (like t(9;11)). Understanding these factors is important because it helps doctors predict which young patients might respond better to treatment. Who this helps: This helps doctors and healthcare providers treating infants with leukemia.

PubMed

Traumatic lumbar puncture at diagnosis adversely affects outcome in childhood acute lymphoblastic leukemia.

2000

Blood

Gajjar A, Harrison PL, Sandlund JT, Rivera GK, Ribeiro RC +6 more

Plain English
This study looked at how a specific medical procedure, called a lumbar puncture, affects children diagnosed with acute lymphoblastic leukemia (ALL). Researchers found that when only one lumbar puncture was contaminated with leukemia cells, the chance of surviving without complications was lower compared to those without contamination; specifically, for those with contamination in both procedures, only 46% were alive and complication-free after five years. This matters because it highlights the need for careful monitoring and possibly stronger treatment for children whose initial tests show contamination, to improve their chances of recovery. Who this helps: This helps young patients with leukemia and their doctors in making treatment decisions.

PubMed

Long-term results of Total Therapy studies 11, 12 and 13A for childhood acute lymphoblastic leukemia at St Jude Children's Research Hospital.

2000

Leukemia

Pui CH, Boyett JM, Rivera GK, Hancock ML, Sandlund JT +10 more

Plain English
This study looked at the long-term effects of three treatment trials for children with a type of leukemia called acute lymphoblastic leukemia (ALL) conducted at St. Jude Children's Research Hospital from 1984 to 1994. The findings show that the survival rate without disease recurrence improved over time, reaching up to 76.9% five years after treatment in the most recent trial, while the risk of the disease coming back in the brain dropped significantly to just 1.2%. This is important because it highlights successful treatment strategies that can lead to better outcomes for children with this serious condition. Who this helps: This helps children with leukemia and their families.

PubMed

Large proportion of Epstein-Barr virus-associated small noncleaved cell lymphomas among children with non-Hodgkin's lymphoma at a single institution in Moscow, Russia.

1999

American journal of clinical oncology

Sandlund JT, Gorban ZI, Berard CW, Sixbey J, Razzouk B +11 more

Plain English
This study looked at 53 children with non-Hodgkin's lymphoma (NHL) treated at a hospital in Moscow from 1990 to 1994. Researchers found that 60% of the cases were a specific type called small noncleaved cell lymphoma, and more than half of these contained the Epstein-Barr virus (53%). This matters because it indicates that Epstein-Barr virus might be more important in the development of NHL than previously thought, which could influence future treatment and prevention strategies. Who this helps: This research benefits doctors and researchers focusing on childhood cancers.

PubMed

Spontaneous splenic rupture in an adult with mumps: a case report.

1988

Surgery

Massad M, Murr M, Razzouk B, Nassourah Z, Sankari M +1 more

PubMed

Frequent Co-Authors

J T Sandlund C H Pui J E Rubnitz W E Evans Martin Zimmermann Henrik Hasle Dirk Reinhardt Ursula Creutzig Paul Gaynon Sima Jeha

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