Ribociclib: another CDK inhibitor hits the mark in breast cancer

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This spring, the US Food and Drug Administration approved a second cyclin-dependent kinase (CDK) inhibitor for the treatment of postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced/metastatic breast cancer in combination with aromatase inhibitors (AIs).1 The drug, ribociclib, joins palbociclib as the second drug in this class, which targets key regulators of the mammalian cell cycle and can help to overcome resistance to endocrine therapy–like AIs, a standard front-line treatment option in this group of patients. Palbociclib (Ibrance) was approved last year in combination with the AI letrozole, which was recently expanded to include its use in combination with all AIs, the same indication for which ribociclib received approval.

The ribociclib approval was based on the results of a phase 3, randomized, double-blind, placebo-controlled, international clinical trial called MONALEESA-2.2 The trial, conducted in 29 countries, compared the effects of ribociclib plus letrozole with letrozole plus placebo in 668 postmenopausal women with locally confirmed, HR-positive, HER2-negative, recurrent or metastatic breast cancer.

Patients had not received previous systemic therapy for advanced disease, had measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST, version 1.1), had an Eastern Cooperative Oncology Group performance status of 0 or 1 (range, 1-5; 0, fully active and 5, dead), and had adequate bone marrow and organ function.

Patients were excluded if they had received previous CDK4/6 therapy, any previous systemic chemotherapy, endocrine therapy for advanced disease, previous neoadjuvant or adjuvant therapy with any nonsteroidal AI (unless they had been disease free for more than 12 months), and had inflammatory breast cancer, central nervous system metastases, history of cardiac disease or dysfunction, or impaired gastrointestinal function that alters drug absorption.

Patients were treated with ribociclib at a dose of 600 mg daily on a 3-weeks-on, 1-week-off schedule in 28-day cycles or placebo, which were combined with letrozole at a dose of 2.5 mg a day on a continuous schedule. Randomization was stratified according to the presence or absence of liver or lung metastases and treatment was continued until disease progression, unacceptable toxicity, death or discontinuation of treatment. Dose reductions of ribociclib were allowed, to manage adverse events (AEs), but treatment crossover was not permitted.

Tumor assessments were performed at screening, every 8 weeks during the first 18 months, every 12 weeks thereafter until disease progression, and at the end of treatment, and were assessed by an independent review committee. The baseline characteristics of the patient population were well balanced; patients had a median age of 62 years, all were HR positive except 1 patient who was HER2 positive.

The trial was ended prematurely after an initial interim analysis demonstrated a significant benefit in favor of ribociclib in the primary endpoint, progression-free survival (PFS). Over a median duration of follow-up of 15.3 months, the median PFS was not yet reached in the ribociclib arm, compared with 14.7 months in the placebo arm (hazard ratio, 0.556; P < .0001). In a subsequent analysis with 11 months of additional follow-up, the median PFS was 25.3 months in the combination arm, compared with 16 months in the placebo arm, which translated into a 44% reduction in the risk of disease progression or death. The PFS benefit with ribociclib was observed across all preplanned subgroup analyses. The objective response rates were 52.7% in the ribociclib arm, compared with 37.1% in the placebo arm, but overall survival data were immature.

The frequency and severity of AEs were increased in the combination arm; most common were neutropenia, nausea, fatigue, diarrhea, leukopenia, alopecia, vomiting, constipation, headache, and back pain. The most common grade 3 or 4 AEs experienced with ribociclib were neutropenia, leukopenia, abnormal liver function tests, lymphopenia, and vomiting.

Ribociclib is accompanied by warnings and precautions about QT interval prolongation, hepatobiliary toxicity, and neutropenia. Clinicians are advised to monitor electrocardiograms and electrolytes before the start of ribociclib therapy and to begin treatment only in patients with QTcF values <450 ms and in whom electrolyte abnormalities have been corrected. ECG should be repeated at around day 14 of the first cycle, the beginning of the second cycle, and as deemed clinically necessary.

Liver function tests should be performed before starting treatment, every 2 weeks for the first 2 cycles, at the beginning of each of the subsequent 4 cycles, and as clinically indicated. For aspartate aminotransferase (AST) and/or alanine aminotransferase (ALT) levels greater than 3-5 times the upper limit of normal (ULN, grade 2), ribociclib should be interrupted until recovery to baseline or lower. For levels >5-20 times the ULN (grade 3) or recurring grade 2 increases, treatment should be interrupted until recovery to baseline or lower and then resumed at the next lowest dose level. Treatment with ribociclib should be discontinued in the event of recurring grade 3 elevations or for AST/ALT elevations >3 times ULN in combination with total bilirubin >2 times ULN.

Complete blood counts should be performed before starting treatment and monitored every 2 weeks for the first 2 cycles, at the beginning of each of the 4 subsequent cycles, and as clinically needed. If absolute neutrophil counts are 500-1,000 mm3 (grade 3), treatment should be discontinued until recovery to grade 2 or lower. If grade 3 neutropenia recurs or for grade 3 febrile neutropenia or grade 4 neutropenia, treatment should resume at a lower dose level upon recovery to grade 2 or lower.

Pregnant women and those of reproductive age should be warned of the risk of fetal harm and the need for effective contraception during treatment and for at least 3 weeks after the last dose. Ribociclib is marketed as Kisqali by Novartis.

References

1. Ribociclib (Kisqali). US Food and Drug Administration website. https://www.fda.gov/drugs/informationondrugs/approveddrugs/ucm546438.htm. Last updated March 14, 2017. Accessed April 3, 2017.

2. Kisqali (ribociclib) tables, for oral use. Prescribing information. Novartis Pharmaceuticals Corp. https://www.pharma.us.novartis.com/sites/www.pharma.us.novartis.com/files/kisqali.pdf. March 2017. Accessed April 3, 2017.

3. Horobagyi GN, Stemmer SN, Burris HA, et al. Ribociclib as first-line therapy for HR-positive, advanced breast cancer. N Engl J Med. 2016;375:1738-1748.

 

 

 

 

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This spring, the US Food and Drug Administration approved a second cyclin-dependent kinase (CDK) inhibitor for the treatment of postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced/metastatic breast cancer in combination with aromatase inhibitors (AIs).1 The drug, ribociclib, joins palbociclib as the second drug in this class, which targets key regulators of the mammalian cell cycle and can help to overcome resistance to endocrine therapy–like AIs, a standard front-line treatment option in this group of patients. Palbociclib (Ibrance) was approved last year in combination with the AI letrozole, which was recently expanded to include its use in combination with all AIs, the same indication for which ribociclib received approval.

The ribociclib approval was based on the results of a phase 3, randomized, double-blind, placebo-controlled, international clinical trial called MONALEESA-2.2 The trial, conducted in 29 countries, compared the effects of ribociclib plus letrozole with letrozole plus placebo in 668 postmenopausal women with locally confirmed, HR-positive, HER2-negative, recurrent or metastatic breast cancer.

Patients had not received previous systemic therapy for advanced disease, had measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST, version 1.1), had an Eastern Cooperative Oncology Group performance status of 0 or 1 (range, 1-5; 0, fully active and 5, dead), and had adequate bone marrow and organ function.

Patients were excluded if they had received previous CDK4/6 therapy, any previous systemic chemotherapy, endocrine therapy for advanced disease, previous neoadjuvant or adjuvant therapy with any nonsteroidal AI (unless they had been disease free for more than 12 months), and had inflammatory breast cancer, central nervous system metastases, history of cardiac disease or dysfunction, or impaired gastrointestinal function that alters drug absorption.

Patients were treated with ribociclib at a dose of 600 mg daily on a 3-weeks-on, 1-week-off schedule in 28-day cycles or placebo, which were combined with letrozole at a dose of 2.5 mg a day on a continuous schedule. Randomization was stratified according to the presence or absence of liver or lung metastases and treatment was continued until disease progression, unacceptable toxicity, death or discontinuation of treatment. Dose reductions of ribociclib were allowed, to manage adverse events (AEs), but treatment crossover was not permitted.

Tumor assessments were performed at screening, every 8 weeks during the first 18 months, every 12 weeks thereafter until disease progression, and at the end of treatment, and were assessed by an independent review committee. The baseline characteristics of the patient population were well balanced; patients had a median age of 62 years, all were HR positive except 1 patient who was HER2 positive.

The trial was ended prematurely after an initial interim analysis demonstrated a significant benefit in favor of ribociclib in the primary endpoint, progression-free survival (PFS). Over a median duration of follow-up of 15.3 months, the median PFS was not yet reached in the ribociclib arm, compared with 14.7 months in the placebo arm (hazard ratio, 0.556; P < .0001). In a subsequent analysis with 11 months of additional follow-up, the median PFS was 25.3 months in the combination arm, compared with 16 months in the placebo arm, which translated into a 44% reduction in the risk of disease progression or death. The PFS benefit with ribociclib was observed across all preplanned subgroup analyses. The objective response rates were 52.7% in the ribociclib arm, compared with 37.1% in the placebo arm, but overall survival data were immature.

The frequency and severity of AEs were increased in the combination arm; most common were neutropenia, nausea, fatigue, diarrhea, leukopenia, alopecia, vomiting, constipation, headache, and back pain. The most common grade 3 or 4 AEs experienced with ribociclib were neutropenia, leukopenia, abnormal liver function tests, lymphopenia, and vomiting.

Ribociclib is accompanied by warnings and precautions about QT interval prolongation, hepatobiliary toxicity, and neutropenia. Clinicians are advised to monitor electrocardiograms and electrolytes before the start of ribociclib therapy and to begin treatment only in patients with QTcF values <450 ms and in whom electrolyte abnormalities have been corrected. ECG should be repeated at around day 14 of the first cycle, the beginning of the second cycle, and as deemed clinically necessary.

Liver function tests should be performed before starting treatment, every 2 weeks for the first 2 cycles, at the beginning of each of the subsequent 4 cycles, and as clinically indicated. For aspartate aminotransferase (AST) and/or alanine aminotransferase (ALT) levels greater than 3-5 times the upper limit of normal (ULN, grade 2), ribociclib should be interrupted until recovery to baseline or lower. For levels >5-20 times the ULN (grade 3) or recurring grade 2 increases, treatment should be interrupted until recovery to baseline or lower and then resumed at the next lowest dose level. Treatment with ribociclib should be discontinued in the event of recurring grade 3 elevations or for AST/ALT elevations >3 times ULN in combination with total bilirubin >2 times ULN.

Complete blood counts should be performed before starting treatment and monitored every 2 weeks for the first 2 cycles, at the beginning of each of the 4 subsequent cycles, and as clinically needed. If absolute neutrophil counts are 500-1,000 mm3 (grade 3), treatment should be discontinued until recovery to grade 2 or lower. If grade 3 neutropenia recurs or for grade 3 febrile neutropenia or grade 4 neutropenia, treatment should resume at a lower dose level upon recovery to grade 2 or lower.

Pregnant women and those of reproductive age should be warned of the risk of fetal harm and the need for effective contraception during treatment and for at least 3 weeks after the last dose. Ribociclib is marketed as Kisqali by Novartis.

This spring, the US Food and Drug Administration approved a second cyclin-dependent kinase (CDK) inhibitor for the treatment of postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced/metastatic breast cancer in combination with aromatase inhibitors (AIs).1 The drug, ribociclib, joins palbociclib as the second drug in this class, which targets key regulators of the mammalian cell cycle and can help to overcome resistance to endocrine therapy–like AIs, a standard front-line treatment option in this group of patients. Palbociclib (Ibrance) was approved last year in combination with the AI letrozole, which was recently expanded to include its use in combination with all AIs, the same indication for which ribociclib received approval.

The ribociclib approval was based on the results of a phase 3, randomized, double-blind, placebo-controlled, international clinical trial called MONALEESA-2.2 The trial, conducted in 29 countries, compared the effects of ribociclib plus letrozole with letrozole plus placebo in 668 postmenopausal women with locally confirmed, HR-positive, HER2-negative, recurrent or metastatic breast cancer.

Patients had not received previous systemic therapy for advanced disease, had measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST, version 1.1), had an Eastern Cooperative Oncology Group performance status of 0 or 1 (range, 1-5; 0, fully active and 5, dead), and had adequate bone marrow and organ function.

Patients were excluded if they had received previous CDK4/6 therapy, any previous systemic chemotherapy, endocrine therapy for advanced disease, previous neoadjuvant or adjuvant therapy with any nonsteroidal AI (unless they had been disease free for more than 12 months), and had inflammatory breast cancer, central nervous system metastases, history of cardiac disease or dysfunction, or impaired gastrointestinal function that alters drug absorption.

Patients were treated with ribociclib at a dose of 600 mg daily on a 3-weeks-on, 1-week-off schedule in 28-day cycles or placebo, which were combined with letrozole at a dose of 2.5 mg a day on a continuous schedule. Randomization was stratified according to the presence or absence of liver or lung metastases and treatment was continued until disease progression, unacceptable toxicity, death or discontinuation of treatment. Dose reductions of ribociclib were allowed, to manage adverse events (AEs), but treatment crossover was not permitted.

Tumor assessments were performed at screening, every 8 weeks during the first 18 months, every 12 weeks thereafter until disease progression, and at the end of treatment, and were assessed by an independent review committee. The baseline characteristics of the patient population were well balanced; patients had a median age of 62 years, all were HR positive except 1 patient who was HER2 positive.

The trial was ended prematurely after an initial interim analysis demonstrated a significant benefit in favor of ribociclib in the primary endpoint, progression-free survival (PFS). Over a median duration of follow-up of 15.3 months, the median PFS was not yet reached in the ribociclib arm, compared with 14.7 months in the placebo arm (hazard ratio, 0.556; P < .0001). In a subsequent analysis with 11 months of additional follow-up, the median PFS was 25.3 months in the combination arm, compared with 16 months in the placebo arm, which translated into a 44% reduction in the risk of disease progression or death. The PFS benefit with ribociclib was observed across all preplanned subgroup analyses. The objective response rates were 52.7% in the ribociclib arm, compared with 37.1% in the placebo arm, but overall survival data were immature.

The frequency and severity of AEs were increased in the combination arm; most common were neutropenia, nausea, fatigue, diarrhea, leukopenia, alopecia, vomiting, constipation, headache, and back pain. The most common grade 3 or 4 AEs experienced with ribociclib were neutropenia, leukopenia, abnormal liver function tests, lymphopenia, and vomiting.

Ribociclib is accompanied by warnings and precautions about QT interval prolongation, hepatobiliary toxicity, and neutropenia. Clinicians are advised to monitor electrocardiograms and electrolytes before the start of ribociclib therapy and to begin treatment only in patients with QTcF values <450 ms and in whom electrolyte abnormalities have been corrected. ECG should be repeated at around day 14 of the first cycle, the beginning of the second cycle, and as deemed clinically necessary.

Liver function tests should be performed before starting treatment, every 2 weeks for the first 2 cycles, at the beginning of each of the subsequent 4 cycles, and as clinically indicated. For aspartate aminotransferase (AST) and/or alanine aminotransferase (ALT) levels greater than 3-5 times the upper limit of normal (ULN, grade 2), ribociclib should be interrupted until recovery to baseline or lower. For levels >5-20 times the ULN (grade 3) or recurring grade 2 increases, treatment should be interrupted until recovery to baseline or lower and then resumed at the next lowest dose level. Treatment with ribociclib should be discontinued in the event of recurring grade 3 elevations or for AST/ALT elevations >3 times ULN in combination with total bilirubin >2 times ULN.

Complete blood counts should be performed before starting treatment and monitored every 2 weeks for the first 2 cycles, at the beginning of each of the 4 subsequent cycles, and as clinically needed. If absolute neutrophil counts are 500-1,000 mm3 (grade 3), treatment should be discontinued until recovery to grade 2 or lower. If grade 3 neutropenia recurs or for grade 3 febrile neutropenia or grade 4 neutropenia, treatment should resume at a lower dose level upon recovery to grade 2 or lower.

Pregnant women and those of reproductive age should be warned of the risk of fetal harm and the need for effective contraception during treatment and for at least 3 weeks after the last dose. Ribociclib is marketed as Kisqali by Novartis.

References

1. Ribociclib (Kisqali). US Food and Drug Administration website. https://www.fda.gov/drugs/informationondrugs/approveddrugs/ucm546438.htm. Last updated March 14, 2017. Accessed April 3, 2017.

2. Kisqali (ribociclib) tables, for oral use. Prescribing information. Novartis Pharmaceuticals Corp. https://www.pharma.us.novartis.com/sites/www.pharma.us.novartis.com/files/kisqali.pdf. March 2017. Accessed April 3, 2017.

3. Horobagyi GN, Stemmer SN, Burris HA, et al. Ribociclib as first-line therapy for HR-positive, advanced breast cancer. N Engl J Med. 2016;375:1738-1748.

 

 

 

 

References

1. Ribociclib (Kisqali). US Food and Drug Administration website. https://www.fda.gov/drugs/informationondrugs/approveddrugs/ucm546438.htm. Last updated March 14, 2017. Accessed April 3, 2017.

2. Kisqali (ribociclib) tables, for oral use. Prescribing information. Novartis Pharmaceuticals Corp. https://www.pharma.us.novartis.com/sites/www.pharma.us.novartis.com/files/kisqali.pdf. March 2017. Accessed April 3, 2017.

3. Horobagyi GN, Stemmer SN, Burris HA, et al. Ribociclib as first-line therapy for HR-positive, advanced breast cancer. N Engl J Med. 2016;375:1738-1748.

 

 

 

 

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LIFSCREEN data support broader cancer screening in Li-Fraumeni syndrome

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Broader cancer screening of individuals with Li-Fraumeni syndrome (LFS), with or without whole-body magnetic resonance imaging, has a good diagnostic yield and identifies a wide range of cancers, according to a preliminary analysis of the ongoing LIFSCREEN phase 3, randomized, controlled trial.

Investigators led by Olivier Caron, MD, chair of the oncogenetics committee, department of medical oncology, at the Gustave Roussy University Hospital in Villejuif, France, enrolled in the trial 107 individuals from 75 families carrying a TP53 mutation, a genetic aberration commonly present in LFS that confers heightened risk of a variety of malignancies.

Participants had a median age at baseline of 32.9 years, with a range from 5 to 67 years. Fully 98% had a family history of cancer, and 48% had a personal history of cancer.

The participants were assigned to 5 years of standard screening – annual clinical examination, abdomen and pelvis ultrasound, brain MRI, complete blood cell count, and, for women older than 20 years, breast ultrasound and MRI – or intensive screening, entailing the addition of diffusion whole-body MRI.

At the time of the preliminary analysis, 15 patients had undergone only one round of screening; 35, two rounds; 19, three rounds; 24, four rounds; and 7, five rounds, Dr. Caron and associates reported in a research letter (JAMA Oncol. 2017; Aug 3 doi: 10.1001/jamaoncol.2017.1358).

Collectively, this amounted to 226.4 person-years of follow-up.

Screening with either trial strategy (with or without whole-body MRI) led to diagnosis of 23 new primary cancers in 20 patients. Nearly half of the total (12 cancers) were detected at the first round. Patients had a median age of 39.8 at the new cancer diagnosis, with a range from 6 to 70 years.

Of the new cancers, 10 belonged to the core LFS spectrum of breast cancer, sarcoma, and brain tumors. However, the other 13 were outside that spectrum, for example, lung adenocarcinomas, all seen in never or light smokers, and leukemias. Screening also detected three relapses of previous cancers.

Analyses further showed that prior cancer diagnosis was not a reliable marker for risk of new primaries. Although 12 of the patients with a screening-detected new primary had a personal cancer history, 8 did not (P = .22).

“The proportion and diversity of off–core LFS spectrum cancers detected in TP53 mutation carriers as reported by others give growing evidence of a broader LFS spectrum, in agreement with the permissive role of TP53 mutations,” write Dr. Caron and colleagues, who report having no relevant disclosures. “Our observations seem to support recent moves toward broader cancer screening in TP53 mutation carriers.”

The investigators continue to collect data in LIFSCREEN and plan to undertake main analysis later this year. “Our final analysis will help to determine the benefits and drawbacks (mostly related to false-positive test results) of whole-body MRI in TP53 mutation carrier surveillance,” they conclude. “Studies focused on TP53 mutation penetrance, using methods limiting selection bias, are required to refine cancer risks to improve TP53 mutation carrier management.”

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Broader cancer screening of individuals with Li-Fraumeni syndrome (LFS), with or without whole-body magnetic resonance imaging, has a good diagnostic yield and identifies a wide range of cancers, according to a preliminary analysis of the ongoing LIFSCREEN phase 3, randomized, controlled trial.

Investigators led by Olivier Caron, MD, chair of the oncogenetics committee, department of medical oncology, at the Gustave Roussy University Hospital in Villejuif, France, enrolled in the trial 107 individuals from 75 families carrying a TP53 mutation, a genetic aberration commonly present in LFS that confers heightened risk of a variety of malignancies.

Participants had a median age at baseline of 32.9 years, with a range from 5 to 67 years. Fully 98% had a family history of cancer, and 48% had a personal history of cancer.

The participants were assigned to 5 years of standard screening – annual clinical examination, abdomen and pelvis ultrasound, brain MRI, complete blood cell count, and, for women older than 20 years, breast ultrasound and MRI – or intensive screening, entailing the addition of diffusion whole-body MRI.

At the time of the preliminary analysis, 15 patients had undergone only one round of screening; 35, two rounds; 19, three rounds; 24, four rounds; and 7, five rounds, Dr. Caron and associates reported in a research letter (JAMA Oncol. 2017; Aug 3 doi: 10.1001/jamaoncol.2017.1358).

Collectively, this amounted to 226.4 person-years of follow-up.

Screening with either trial strategy (with or without whole-body MRI) led to diagnosis of 23 new primary cancers in 20 patients. Nearly half of the total (12 cancers) were detected at the first round. Patients had a median age of 39.8 at the new cancer diagnosis, with a range from 6 to 70 years.

Of the new cancers, 10 belonged to the core LFS spectrum of breast cancer, sarcoma, and brain tumors. However, the other 13 were outside that spectrum, for example, lung adenocarcinomas, all seen in never or light smokers, and leukemias. Screening also detected three relapses of previous cancers.

Analyses further showed that prior cancer diagnosis was not a reliable marker for risk of new primaries. Although 12 of the patients with a screening-detected new primary had a personal cancer history, 8 did not (P = .22).

“The proportion and diversity of off–core LFS spectrum cancers detected in TP53 mutation carriers as reported by others give growing evidence of a broader LFS spectrum, in agreement with the permissive role of TP53 mutations,” write Dr. Caron and colleagues, who report having no relevant disclosures. “Our observations seem to support recent moves toward broader cancer screening in TP53 mutation carriers.”

The investigators continue to collect data in LIFSCREEN and plan to undertake main analysis later this year. “Our final analysis will help to determine the benefits and drawbacks (mostly related to false-positive test results) of whole-body MRI in TP53 mutation carrier surveillance,” they conclude. “Studies focused on TP53 mutation penetrance, using methods limiting selection bias, are required to refine cancer risks to improve TP53 mutation carrier management.”

 

Broader cancer screening of individuals with Li-Fraumeni syndrome (LFS), with or without whole-body magnetic resonance imaging, has a good diagnostic yield and identifies a wide range of cancers, according to a preliminary analysis of the ongoing LIFSCREEN phase 3, randomized, controlled trial.

Investigators led by Olivier Caron, MD, chair of the oncogenetics committee, department of medical oncology, at the Gustave Roussy University Hospital in Villejuif, France, enrolled in the trial 107 individuals from 75 families carrying a TP53 mutation, a genetic aberration commonly present in LFS that confers heightened risk of a variety of malignancies.

Participants had a median age at baseline of 32.9 years, with a range from 5 to 67 years. Fully 98% had a family history of cancer, and 48% had a personal history of cancer.

The participants were assigned to 5 years of standard screening – annual clinical examination, abdomen and pelvis ultrasound, brain MRI, complete blood cell count, and, for women older than 20 years, breast ultrasound and MRI – or intensive screening, entailing the addition of diffusion whole-body MRI.

At the time of the preliminary analysis, 15 patients had undergone only one round of screening; 35, two rounds; 19, three rounds; 24, four rounds; and 7, five rounds, Dr. Caron and associates reported in a research letter (JAMA Oncol. 2017; Aug 3 doi: 10.1001/jamaoncol.2017.1358).

Collectively, this amounted to 226.4 person-years of follow-up.

Screening with either trial strategy (with or without whole-body MRI) led to diagnosis of 23 new primary cancers in 20 patients. Nearly half of the total (12 cancers) were detected at the first round. Patients had a median age of 39.8 at the new cancer diagnosis, with a range from 6 to 70 years.

Of the new cancers, 10 belonged to the core LFS spectrum of breast cancer, sarcoma, and brain tumors. However, the other 13 were outside that spectrum, for example, lung adenocarcinomas, all seen in never or light smokers, and leukemias. Screening also detected three relapses of previous cancers.

Analyses further showed that prior cancer diagnosis was not a reliable marker for risk of new primaries. Although 12 of the patients with a screening-detected new primary had a personal cancer history, 8 did not (P = .22).

“The proportion and diversity of off–core LFS spectrum cancers detected in TP53 mutation carriers as reported by others give growing evidence of a broader LFS spectrum, in agreement with the permissive role of TP53 mutations,” write Dr. Caron and colleagues, who report having no relevant disclosures. “Our observations seem to support recent moves toward broader cancer screening in TP53 mutation carriers.”

The investigators continue to collect data in LIFSCREEN and plan to undertake main analysis later this year. “Our final analysis will help to determine the benefits and drawbacks (mostly related to false-positive test results) of whole-body MRI in TP53 mutation carrier surveillance,” they conclude. “Studies focused on TP53 mutation penetrance, using methods limiting selection bias, are required to refine cancer risks to improve TP53 mutation carrier management.”

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Key clinical point: Annual broad, multimodality screening of individuals with Li-Fraumeni syndrome nets a high yield of cancers.

Major finding: A total of 23 new primary cancers were diagnosed in 20 patients; more than half were outside the core spectrum of Li-Fraumeni syndrome.

Data source: A preliminary analysis of a phase 3, randomized, controlled trial comparing standard and intensive screening among 107 individuals with Li-Fraumeni syndrome carrying a TP53 mutation (LIFSCREEN trial).

Disclosures: The investigators report having no relevant disclosures. The trial was funded by the French Ligue Contre le Cancer.

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Breast Cancer Risk Assessment and Chemoprevention Use Among VA Primary Care

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Background: Despite recommended guidelines and available medications to reduce breast cancer risk by up to 50-65%, < 5% of the 10 million eligible women are offered chemoprevention in the U.S. The comfort level, practice patterns, and barriers to breast cancer risk assessment and chemoprevention use within the VA have not been reported.

Methods: We assessed VA primary care providers using a REDcap survey. We obtained provider demographics, use and comfort level with breast cancer risk models and chemoprevention, and knowledge about chemoprevention. Data was analyzed with Fisher exact or chi-square tests.

Results: Of the 200 survey respondents, 167 were included for analysis. Overall, 30% used the Gail model monthly or more often, and 1.5% prescribed chemoprevention in the past 2 years. Fewer than 30% correctly answered chemoprevention knowledge questions. Designated women’s
health providers were more comfortable with risk assessment and chemoprevention (P < .046, P < .004) and used risk models more often (P < .045). 63% expressed interest in education about breast cancer prevention.

Conclusions: Breast cancer risk assessment and chemoprevention use by VA primary care is limited by lack of comfort and familiarity. Women‘s health providers are more comfortable and knowledgeable about breast cancer risk models and chemoprevention, offering an opportunity for partnership with high-risk oncologists to improve breast cancer risk assessment and chemoprevention use among female Veterans.

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Abstract 11: 2017 AVAHO Meeting

Background: Despite recommended guidelines and available medications to reduce breast cancer risk by up to 50-65%, < 5% of the 10 million eligible women are offered chemoprevention in the U.S. The comfort level, practice patterns, and barriers to breast cancer risk assessment and chemoprevention use within the VA have not been reported.

Methods: We assessed VA primary care providers using a REDcap survey. We obtained provider demographics, use and comfort level with breast cancer risk models and chemoprevention, and knowledge about chemoprevention. Data was analyzed with Fisher exact or chi-square tests.

Results: Of the 200 survey respondents, 167 were included for analysis. Overall, 30% used the Gail model monthly or more often, and 1.5% prescribed chemoprevention in the past 2 years. Fewer than 30% correctly answered chemoprevention knowledge questions. Designated women’s
health providers were more comfortable with risk assessment and chemoprevention (P < .046, P < .004) and used risk models more often (P < .045). 63% expressed interest in education about breast cancer prevention.

Conclusions: Breast cancer risk assessment and chemoprevention use by VA primary care is limited by lack of comfort and familiarity. Women‘s health providers are more comfortable and knowledgeable about breast cancer risk models and chemoprevention, offering an opportunity for partnership with high-risk oncologists to improve breast cancer risk assessment and chemoprevention use among female Veterans.

Background: Despite recommended guidelines and available medications to reduce breast cancer risk by up to 50-65%, < 5% of the 10 million eligible women are offered chemoprevention in the U.S. The comfort level, practice patterns, and barriers to breast cancer risk assessment and chemoprevention use within the VA have not been reported.

Methods: We assessed VA primary care providers using a REDcap survey. We obtained provider demographics, use and comfort level with breast cancer risk models and chemoprevention, and knowledge about chemoprevention. Data was analyzed with Fisher exact or chi-square tests.

Results: Of the 200 survey respondents, 167 were included for analysis. Overall, 30% used the Gail model monthly or more often, and 1.5% prescribed chemoprevention in the past 2 years. Fewer than 30% correctly answered chemoprevention knowledge questions. Designated women’s
health providers were more comfortable with risk assessment and chemoprevention (P < .046, P < .004) and used risk models more often (P < .045). 63% expressed interest in education about breast cancer prevention.

Conclusions: Breast cancer risk assessment and chemoprevention use by VA primary care is limited by lack of comfort and familiarity. Women‘s health providers are more comfortable and knowledgeable about breast cancer risk models and chemoprevention, offering an opportunity for partnership with high-risk oncologists to improve breast cancer risk assessment and chemoprevention use among female Veterans.

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Women Living Longer With Metastatic Breast Cancer

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Research shows that the relative survival rate of women with metastatic breast cancer has doubled.

More women are living longer with distant metastatic breast cancer (MBC), according to a National Cancer Institute study. Between 1992-1994 and 2005-2012, 5-year relative survival among women who were diagnosed with MBC at ages 15 to 49 doubled, from 18% to 36%.

Researchers also found that relative survival time increased from 22.3 months to 38.7 months for women diagnosed aged 15 -49 years, and from 19.1 months to 29.7 months for those aged 50 – 64 years.

Moreover, a “small but meaningful” number of women are living years after an initial diagnosis of MBC, the study found. More than 11% of women diagnosed between 2000-2004 aged < 64 years survived ≥ 10 years. Although nearly half of women with MBC have had it for ≤ 2 , one third have lived with it for ≥ 5 years.

The study findings “make clear that the majority of MBC patients, those who are diagnosed with non-metastatic cancer but progress to distant disease, have never been properly documented,” said Angela Mariotto, PhD, chief of the NCI Data Analytics Branch of the Division of Cancer Control and Population Sciences. By including women with recurrence, the study provides a more accurate number of women in the U.S. living with MBC, which can help with health care planning.

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Research shows that the relative survival rate of women with metastatic breast cancer has doubled.
Research shows that the relative survival rate of women with metastatic breast cancer has doubled.

More women are living longer with distant metastatic breast cancer (MBC), according to a National Cancer Institute study. Between 1992-1994 and 2005-2012, 5-year relative survival among women who were diagnosed with MBC at ages 15 to 49 doubled, from 18% to 36%.

Researchers also found that relative survival time increased from 22.3 months to 38.7 months for women diagnosed aged 15 -49 years, and from 19.1 months to 29.7 months for those aged 50 – 64 years.

Moreover, a “small but meaningful” number of women are living years after an initial diagnosis of MBC, the study found. More than 11% of women diagnosed between 2000-2004 aged < 64 years survived ≥ 10 years. Although nearly half of women with MBC have had it for ≤ 2 , one third have lived with it for ≥ 5 years.

The study findings “make clear that the majority of MBC patients, those who are diagnosed with non-metastatic cancer but progress to distant disease, have never been properly documented,” said Angela Mariotto, PhD, chief of the NCI Data Analytics Branch of the Division of Cancer Control and Population Sciences. By including women with recurrence, the study provides a more accurate number of women in the U.S. living with MBC, which can help with health care planning.

More women are living longer with distant metastatic breast cancer (MBC), according to a National Cancer Institute study. Between 1992-1994 and 2005-2012, 5-year relative survival among women who were diagnosed with MBC at ages 15 to 49 doubled, from 18% to 36%.

Researchers also found that relative survival time increased from 22.3 months to 38.7 months for women diagnosed aged 15 -49 years, and from 19.1 months to 29.7 months for those aged 50 – 64 years.

Moreover, a “small but meaningful” number of women are living years after an initial diagnosis of MBC, the study found. More than 11% of women diagnosed between 2000-2004 aged < 64 years survived ≥ 10 years. Although nearly half of women with MBC have had it for ≤ 2 , one third have lived with it for ≥ 5 years.

The study findings “make clear that the majority of MBC patients, those who are diagnosed with non-metastatic cancer but progress to distant disease, have never been properly documented,” said Angela Mariotto, PhD, chief of the NCI Data Analytics Branch of the Division of Cancer Control and Population Sciences. By including women with recurrence, the study provides a more accurate number of women in the U.S. living with MBC, which can help with health care planning.

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FDA approves neratinib for extended adjuvant treatment of HER2+ breast cancer

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The Food and Drug Administration has approved neratinib, an oral tyrosine kinase inhibitor, for the extended adjuvant treatment of patients with early-stage, HER2-positive breast cancer who have previously been treated with trastuzumab.

Approval was based on improved invasive disease-free survival (iDFS) in the phase 3 ExteNET trial of 2,840 women with early-stage HER2-positive breast cancer who were within 2 years of completing adjuvant trastuzumab. Patients were randomized to receive either neratinib or placebo daily for 1 year. After 2 years of follow-up, iDFS was 94.2% in patients treated with neratinib, compared with 91.9% in those receiving placebo (hazard ratio, 0.66; 95% confidence interval, 0.49, 0.90; P = .008), according to the FDA statement.

“HER2-positive breast cancers are aggressive tumors and can spread to other parts of the body, making adjuvant therapy an important part of the treatment plan,” Richard Pazdur, MD, director of the FDA’s Oncology Center of Excellence and acting director of the Office of Hematology and Oncology Products in the FDA’s Center for Drug Evaluation and Research, said in a statement. “Now, these patients have an option after initial treatment that may help keep the cancer from coming back.”

The most common adverse reactions to neratinib in ExteNET were diarrhea, nausea, abdominal pain, fatigue, vomiting, rash, stomatitis, decreased appetite, muscle spasms, dyspepsia, AST or ALT increase, nail disorder, dry skin, abdominal distention, weight loss, and urinary tract infection. Diarrhea was observed in 16.8% of neratinib-treated patients.

The recommended dose of of neratinib is 240 mg (six 40 mg tablets) given orally once daily with food, continuously, for 1 year. Patients should be given antidiarrheal prophylaxis for the first 56 days of treatment with neratinib and as needed thereafter to help manage diarrhea, the FDA said.

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The Food and Drug Administration has approved neratinib, an oral tyrosine kinase inhibitor, for the extended adjuvant treatment of patients with early-stage, HER2-positive breast cancer who have previously been treated with trastuzumab.

Approval was based on improved invasive disease-free survival (iDFS) in the phase 3 ExteNET trial of 2,840 women with early-stage HER2-positive breast cancer who were within 2 years of completing adjuvant trastuzumab. Patients were randomized to receive either neratinib or placebo daily for 1 year. After 2 years of follow-up, iDFS was 94.2% in patients treated with neratinib, compared with 91.9% in those receiving placebo (hazard ratio, 0.66; 95% confidence interval, 0.49, 0.90; P = .008), according to the FDA statement.

“HER2-positive breast cancers are aggressive tumors and can spread to other parts of the body, making adjuvant therapy an important part of the treatment plan,” Richard Pazdur, MD, director of the FDA’s Oncology Center of Excellence and acting director of the Office of Hematology and Oncology Products in the FDA’s Center for Drug Evaluation and Research, said in a statement. “Now, these patients have an option after initial treatment that may help keep the cancer from coming back.”

The most common adverse reactions to neratinib in ExteNET were diarrhea, nausea, abdominal pain, fatigue, vomiting, rash, stomatitis, decreased appetite, muscle spasms, dyspepsia, AST or ALT increase, nail disorder, dry skin, abdominal distention, weight loss, and urinary tract infection. Diarrhea was observed in 16.8% of neratinib-treated patients.

The recommended dose of of neratinib is 240 mg (six 40 mg tablets) given orally once daily with food, continuously, for 1 year. Patients should be given antidiarrheal prophylaxis for the first 56 days of treatment with neratinib and as needed thereafter to help manage diarrhea, the FDA said.

 

The Food and Drug Administration has approved neratinib, an oral tyrosine kinase inhibitor, for the extended adjuvant treatment of patients with early-stage, HER2-positive breast cancer who have previously been treated with trastuzumab.

Approval was based on improved invasive disease-free survival (iDFS) in the phase 3 ExteNET trial of 2,840 women with early-stage HER2-positive breast cancer who were within 2 years of completing adjuvant trastuzumab. Patients were randomized to receive either neratinib or placebo daily for 1 year. After 2 years of follow-up, iDFS was 94.2% in patients treated with neratinib, compared with 91.9% in those receiving placebo (hazard ratio, 0.66; 95% confidence interval, 0.49, 0.90; P = .008), according to the FDA statement.

“HER2-positive breast cancers are aggressive tumors and can spread to other parts of the body, making adjuvant therapy an important part of the treatment plan,” Richard Pazdur, MD, director of the FDA’s Oncology Center of Excellence and acting director of the Office of Hematology and Oncology Products in the FDA’s Center for Drug Evaluation and Research, said in a statement. “Now, these patients have an option after initial treatment that may help keep the cancer from coming back.”

The most common adverse reactions to neratinib in ExteNET were diarrhea, nausea, abdominal pain, fatigue, vomiting, rash, stomatitis, decreased appetite, muscle spasms, dyspepsia, AST or ALT increase, nail disorder, dry skin, abdominal distention, weight loss, and urinary tract infection. Diarrhea was observed in 16.8% of neratinib-treated patients.

The recommended dose of of neratinib is 240 mg (six 40 mg tablets) given orally once daily with food, continuously, for 1 year. Patients should be given antidiarrheal prophylaxis for the first 56 days of treatment with neratinib and as needed thereafter to help manage diarrhea, the FDA said.

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Use of Pap smears, mammography on the decline

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Use of Pap smears and mammography has slowly but steadily declined since both peaked in the year 2000, according to the National Center for Health Statistics.

The age-adjusted rate of women aged 18 years and over who reported having had a Pap smear in the past 3 years dropped from 81.3% in 2000 to 70.2% in 2015. Over that same time period, the age-adjusted rate of women aged 40 years and over who had a mammogram over the previous 2 years declined from 70.4% in 2000 to 64% in 2015, the NCHS reported in “Health, United States, 2016.”

The declines in Pap smear use occurred among all age groups, dropping from 84.9% in 2000 to 76.1% in 2015 for those aged 18-44 years and from 84.6% to 75.5% among 45- to 64-year-olds, with the same pattern seen in all of the narrower age subsegments. Rates also were down in all races, with the largest drop occurring in American Indian/Alaska natives – 76.8% to 60.9% – and the smallest – 66.4% to 64.9% – in Asian women, data from the National Health Interview Survey show.

The pattern for mammography use, however, was somewhat different. Declines in use were consistent by age group, but not by race. White women were less likely to get a mammogram in 2015 (65.3%), compared with 2000 (71.4%), while Hispanic women experienced a small drop from 61.2% to 60.9%, but black, American Indian/Alaska Native, and Asian women all increased their use of mammography over that time period, the NCHS reported.

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Use of Pap smears and mammography has slowly but steadily declined since both peaked in the year 2000, according to the National Center for Health Statistics.

The age-adjusted rate of women aged 18 years and over who reported having had a Pap smear in the past 3 years dropped from 81.3% in 2000 to 70.2% in 2015. Over that same time period, the age-adjusted rate of women aged 40 years and over who had a mammogram over the previous 2 years declined from 70.4% in 2000 to 64% in 2015, the NCHS reported in “Health, United States, 2016.”

The declines in Pap smear use occurred among all age groups, dropping from 84.9% in 2000 to 76.1% in 2015 for those aged 18-44 years and from 84.6% to 75.5% among 45- to 64-year-olds, with the same pattern seen in all of the narrower age subsegments. Rates also were down in all races, with the largest drop occurring in American Indian/Alaska natives – 76.8% to 60.9% – and the smallest – 66.4% to 64.9% – in Asian women, data from the National Health Interview Survey show.

The pattern for mammography use, however, was somewhat different. Declines in use were consistent by age group, but not by race. White women were less likely to get a mammogram in 2015 (65.3%), compared with 2000 (71.4%), while Hispanic women experienced a small drop from 61.2% to 60.9%, but black, American Indian/Alaska Native, and Asian women all increased their use of mammography over that time period, the NCHS reported.

 

Use of Pap smears and mammography has slowly but steadily declined since both peaked in the year 2000, according to the National Center for Health Statistics.

The age-adjusted rate of women aged 18 years and over who reported having had a Pap smear in the past 3 years dropped from 81.3% in 2000 to 70.2% in 2015. Over that same time period, the age-adjusted rate of women aged 40 years and over who had a mammogram over the previous 2 years declined from 70.4% in 2000 to 64% in 2015, the NCHS reported in “Health, United States, 2016.”

The declines in Pap smear use occurred among all age groups, dropping from 84.9% in 2000 to 76.1% in 2015 for those aged 18-44 years and from 84.6% to 75.5% among 45- to 64-year-olds, with the same pattern seen in all of the narrower age subsegments. Rates also were down in all races, with the largest drop occurring in American Indian/Alaska natives – 76.8% to 60.9% – and the smallest – 66.4% to 64.9% – in Asian women, data from the National Health Interview Survey show.

The pattern for mammography use, however, was somewhat different. Declines in use were consistent by age group, but not by race. White women were less likely to get a mammogram in 2015 (65.3%), compared with 2000 (71.4%), while Hispanic women experienced a small drop from 61.2% to 60.9%, but black, American Indian/Alaska Native, and Asian women all increased their use of mammography over that time period, the NCHS reported.

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Temporary tissue expanders optimize radiotherapy after mastectomy

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– Radiation oncologists at the University of Texas MD Anderson Cancer Center, Houston, were able to complete 98% of their radiotherapy plans when women received temporary tissue expanders, instead of immediate reconstructions, at the time of skin-sparing mastectomy, in a series of 384 women, most with stage 2-3 breast cancer.

The expanders – saline-filled bags commonly used in plastic surgery to create new skin – were kept in place but deflated for radiotherapy, which allowed for optimal access to treatment fields; the final reconstruction, successful in 90% of women, came a median of 7 months following radiation.

M. Alexander Otto/Frontline Medical News
Dr. Eric Strom and Dr. Zeina Ayoub
MD Anderson started offering the approach after the realization that more than 50% of radiation plans were compromised when breasts were reconstructed beforehand, at the time of mastectomy (Int J Radiat Oncol Biol Phys. 2006 Sep 1;66[1]:76-82).

“The shape and volume of the reconstruction” – and the need to avoid damaging the new breast – “got in the way of putting radiation where we wanted it to be. We ended up having bad radiotherapy plans, patients not getting skin-sparing mastectomies, and high probabilities of radiation complications to the reconstruction,” said investigator Eric Strom, MD, professor of radiation oncology at MD Anderson.

Radiologists and plastic and oncologic surgeons collaborated to try tissue expanders instead. “We wanted the advantage of skin-sparing mastectomy without the disadvantages” of immediate reconstruction, Dr. Strom said at the American Society of Breast Surgeons annual meeting.

With the new approach, “radiotherapy is superior. We don’t have to compromise our plans. I can put radiation everywhere it needs to be, without frying the heart” and almost completely avoiding the lungs, he said.

The 5-year rates of locoregional control, disease-free survival, and overall survival were 99.2%, 86.1%, and 92.4%, respectively, which “is extraordinary” in patients with stage 2-3 breast cancer, and likely due at least in part to optimal radiotherapy, he said.

Tissue expanders also keep the skin envelope open so it’s able to receive a graft at final reconstruction; abdominal skin doesn’t have to brought up to recreate the breast.

“This approach lessens negative interactions between breast reconstruction and [radiotherapy] and offers patients what they most desire: a high probability of freedom from cancer and optimal final aesthetic outcome,” said Zeina Ayoub, MD, a radiation oncology fellow at Anderson who presented the findings.

The median age of the women was 44 years, and almost all were node positive. Radiation was delivered to the chest wall and regional lymphatics, including the internal mammary chain.

Fifty women (13.0%) required explantation after radiation but before reconstruction, most commonly because of cellulitis; even so, more than half went on to final reconstruction.

Abdominal autologous reconstruction was the most common type, followed by latissimus dorsi–based reconstruction, and exchange of the tissue expander with an implant.

Dr. Ayoub and Dr. Strom had no relevant disclosures.
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– Radiation oncologists at the University of Texas MD Anderson Cancer Center, Houston, were able to complete 98% of their radiotherapy plans when women received temporary tissue expanders, instead of immediate reconstructions, at the time of skin-sparing mastectomy, in a series of 384 women, most with stage 2-3 breast cancer.

The expanders – saline-filled bags commonly used in plastic surgery to create new skin – were kept in place but deflated for radiotherapy, which allowed for optimal access to treatment fields; the final reconstruction, successful in 90% of women, came a median of 7 months following radiation.

M. Alexander Otto/Frontline Medical News
Dr. Eric Strom and Dr. Zeina Ayoub
MD Anderson started offering the approach after the realization that more than 50% of radiation plans were compromised when breasts were reconstructed beforehand, at the time of mastectomy (Int J Radiat Oncol Biol Phys. 2006 Sep 1;66[1]:76-82).

“The shape and volume of the reconstruction” – and the need to avoid damaging the new breast – “got in the way of putting radiation where we wanted it to be. We ended up having bad radiotherapy plans, patients not getting skin-sparing mastectomies, and high probabilities of radiation complications to the reconstruction,” said investigator Eric Strom, MD, professor of radiation oncology at MD Anderson.

Radiologists and plastic and oncologic surgeons collaborated to try tissue expanders instead. “We wanted the advantage of skin-sparing mastectomy without the disadvantages” of immediate reconstruction, Dr. Strom said at the American Society of Breast Surgeons annual meeting.

With the new approach, “radiotherapy is superior. We don’t have to compromise our plans. I can put radiation everywhere it needs to be, without frying the heart” and almost completely avoiding the lungs, he said.

The 5-year rates of locoregional control, disease-free survival, and overall survival were 99.2%, 86.1%, and 92.4%, respectively, which “is extraordinary” in patients with stage 2-3 breast cancer, and likely due at least in part to optimal radiotherapy, he said.

Tissue expanders also keep the skin envelope open so it’s able to receive a graft at final reconstruction; abdominal skin doesn’t have to brought up to recreate the breast.

“This approach lessens negative interactions between breast reconstruction and [radiotherapy] and offers patients what they most desire: a high probability of freedom from cancer and optimal final aesthetic outcome,” said Zeina Ayoub, MD, a radiation oncology fellow at Anderson who presented the findings.

The median age of the women was 44 years, and almost all were node positive. Radiation was delivered to the chest wall and regional lymphatics, including the internal mammary chain.

Fifty women (13.0%) required explantation after radiation but before reconstruction, most commonly because of cellulitis; even so, more than half went on to final reconstruction.

Abdominal autologous reconstruction was the most common type, followed by latissimus dorsi–based reconstruction, and exchange of the tissue expander with an implant.

Dr. Ayoub and Dr. Strom had no relevant disclosures.

 

– Radiation oncologists at the University of Texas MD Anderson Cancer Center, Houston, were able to complete 98% of their radiotherapy plans when women received temporary tissue expanders, instead of immediate reconstructions, at the time of skin-sparing mastectomy, in a series of 384 women, most with stage 2-3 breast cancer.

The expanders – saline-filled bags commonly used in plastic surgery to create new skin – were kept in place but deflated for radiotherapy, which allowed for optimal access to treatment fields; the final reconstruction, successful in 90% of women, came a median of 7 months following radiation.

M. Alexander Otto/Frontline Medical News
Dr. Eric Strom and Dr. Zeina Ayoub
MD Anderson started offering the approach after the realization that more than 50% of radiation plans were compromised when breasts were reconstructed beforehand, at the time of mastectomy (Int J Radiat Oncol Biol Phys. 2006 Sep 1;66[1]:76-82).

“The shape and volume of the reconstruction” – and the need to avoid damaging the new breast – “got in the way of putting radiation where we wanted it to be. We ended up having bad radiotherapy plans, patients not getting skin-sparing mastectomies, and high probabilities of radiation complications to the reconstruction,” said investigator Eric Strom, MD, professor of radiation oncology at MD Anderson.

Radiologists and plastic and oncologic surgeons collaborated to try tissue expanders instead. “We wanted the advantage of skin-sparing mastectomy without the disadvantages” of immediate reconstruction, Dr. Strom said at the American Society of Breast Surgeons annual meeting.

With the new approach, “radiotherapy is superior. We don’t have to compromise our plans. I can put radiation everywhere it needs to be, without frying the heart” and almost completely avoiding the lungs, he said.

The 5-year rates of locoregional control, disease-free survival, and overall survival were 99.2%, 86.1%, and 92.4%, respectively, which “is extraordinary” in patients with stage 2-3 breast cancer, and likely due at least in part to optimal radiotherapy, he said.

Tissue expanders also keep the skin envelope open so it’s able to receive a graft at final reconstruction; abdominal skin doesn’t have to brought up to recreate the breast.

“This approach lessens negative interactions between breast reconstruction and [radiotherapy] and offers patients what they most desire: a high probability of freedom from cancer and optimal final aesthetic outcome,” said Zeina Ayoub, MD, a radiation oncology fellow at Anderson who presented the findings.

The median age of the women was 44 years, and almost all were node positive. Radiation was delivered to the chest wall and regional lymphatics, including the internal mammary chain.

Fifty women (13.0%) required explantation after radiation but before reconstruction, most commonly because of cellulitis; even so, more than half went on to final reconstruction.

Abdominal autologous reconstruction was the most common type, followed by latissimus dorsi–based reconstruction, and exchange of the tissue expander with an implant.

Dr. Ayoub and Dr. Strom had no relevant disclosures.
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Key clinical point: Radiation oncologists at the University of Texas MD Anderson Cancer Center, Houston, were able to complete 98% of their radiotherapy plans when women with stage 2-3 breast cancer received temporary tissue expanders, instead of immediate reconstructions, at the time skin-sparing mastectomy.

Major finding: The 5-year rates of locoregional control, disease-free survival, and overall survival were 99.2%, 86.1%, and 92.4%, respectively, likely due at least in part to optimal radiotherapy.

Data source: Review of 384 patients.

Disclosures: The investigators said they had no relevant disclosures.

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Consequence of change? Medicaid disenrollment delayed breast cancer diagnosis

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A spike in later-stage breast cancers is a potential byproduct of the Republican-proposed Medicaid reductions, according to Wafa Tarazi, PhD, and her colleagues.

The team looked at breast cancer stage at diagnosis following the 2005 Medicaid disenrollment of nearly 170,000 nonelderly adults in Tennessee that occurred because of state financial issues.

“Overall, nonelderly women in Tennessee were diagnosed at later stages of disease and experienced more delays in treatment in the period after disenrollment,” wrote Dr. Tarazi of Virginia Commonwealth University, Richmond, and her colleagues. “Disenrollment was found to be associated with a 3.3 percentage point increase in late stage of disease at the time of diagnosis” (Cancer 2016 June 26. doi: 10.1002/cncr.30771).

The investigators offered a few explanations for why this could be the case.

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“The diagnosis of cancer depends on regular access to preventive services offered by a primary care provider, not an oncologist or a surgeon,” they wrote. “Low-income women who were disenrolled from Medicaid coverage were likely to lose access to preventive services such as mammography screening, which is an important tool for the detection of breast cancer at early stages.”

While disenrollment was associated with later stage of breast cancer at diagnosis, it also was associated with a 1.9 percentage-point decrease in a 60-day–plus delay in surgical treatment and a 1.4 percentage-point decrease in a greater-than-90-day–plus delay in treatment for women living in low-income ZIP codes, compared with women living in high-income ZIP codes.

Contractions “in the availability of Medicaid coverage have important health consequences for low-income women, and may increase income-related disparities, morbidity, and mortality for those diagnosed with breast cancer,” the authors wrote. “These negative health consequences should be considered by policymakers who weigh the costs and benefits of implementing or discontinuing expanded Medicaid coverage under the Patient Protection and Affordable Care Act and future federal and state policies.”

The Susan G. Komen Breast Cancer Foundation funded the study. The authors reported no conflicts of interest.

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A spike in later-stage breast cancers is a potential byproduct of the Republican-proposed Medicaid reductions, according to Wafa Tarazi, PhD, and her colleagues.

The team looked at breast cancer stage at diagnosis following the 2005 Medicaid disenrollment of nearly 170,000 nonelderly adults in Tennessee that occurred because of state financial issues.

“Overall, nonelderly women in Tennessee were diagnosed at later stages of disease and experienced more delays in treatment in the period after disenrollment,” wrote Dr. Tarazi of Virginia Commonwealth University, Richmond, and her colleagues. “Disenrollment was found to be associated with a 3.3 percentage point increase in late stage of disease at the time of diagnosis” (Cancer 2016 June 26. doi: 10.1002/cncr.30771).

The investigators offered a few explanations for why this could be the case.

sndr/istockphoto.com
“The diagnosis of cancer depends on regular access to preventive services offered by a primary care provider, not an oncologist or a surgeon,” they wrote. “Low-income women who were disenrolled from Medicaid coverage were likely to lose access to preventive services such as mammography screening, which is an important tool for the detection of breast cancer at early stages.”

While disenrollment was associated with later stage of breast cancer at diagnosis, it also was associated with a 1.9 percentage-point decrease in a 60-day–plus delay in surgical treatment and a 1.4 percentage-point decrease in a greater-than-90-day–plus delay in treatment for women living in low-income ZIP codes, compared with women living in high-income ZIP codes.

Contractions “in the availability of Medicaid coverage have important health consequences for low-income women, and may increase income-related disparities, morbidity, and mortality for those diagnosed with breast cancer,” the authors wrote. “These negative health consequences should be considered by policymakers who weigh the costs and benefits of implementing or discontinuing expanded Medicaid coverage under the Patient Protection and Affordable Care Act and future federal and state policies.”

The Susan G. Komen Breast Cancer Foundation funded the study. The authors reported no conflicts of interest.

 

A spike in later-stage breast cancers is a potential byproduct of the Republican-proposed Medicaid reductions, according to Wafa Tarazi, PhD, and her colleagues.

The team looked at breast cancer stage at diagnosis following the 2005 Medicaid disenrollment of nearly 170,000 nonelderly adults in Tennessee that occurred because of state financial issues.

“Overall, nonelderly women in Tennessee were diagnosed at later stages of disease and experienced more delays in treatment in the period after disenrollment,” wrote Dr. Tarazi of Virginia Commonwealth University, Richmond, and her colleagues. “Disenrollment was found to be associated with a 3.3 percentage point increase in late stage of disease at the time of diagnosis” (Cancer 2016 June 26. doi: 10.1002/cncr.30771).

The investigators offered a few explanations for why this could be the case.

sndr/istockphoto.com
“The diagnosis of cancer depends on regular access to preventive services offered by a primary care provider, not an oncologist or a surgeon,” they wrote. “Low-income women who were disenrolled from Medicaid coverage were likely to lose access to preventive services such as mammography screening, which is an important tool for the detection of breast cancer at early stages.”

While disenrollment was associated with later stage of breast cancer at diagnosis, it also was associated with a 1.9 percentage-point decrease in a 60-day–plus delay in surgical treatment and a 1.4 percentage-point decrease in a greater-than-90-day–plus delay in treatment for women living in low-income ZIP codes, compared with women living in high-income ZIP codes.

Contractions “in the availability of Medicaid coverage have important health consequences for low-income women, and may increase income-related disparities, morbidity, and mortality for those diagnosed with breast cancer,” the authors wrote. “These negative health consequences should be considered by policymakers who weigh the costs and benefits of implementing or discontinuing expanded Medicaid coverage under the Patient Protection and Affordable Care Act and future federal and state policies.”

The Susan G. Komen Breast Cancer Foundation funded the study. The authors reported no conflicts of interest.

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Some adjuvant endocrine therapies better than others for young breast cancer patients

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Young women treated for early hormone receptor–positive, HER2-negative breast cancer fare better if their adjuvant endocrine therapy includes ovarian function suppression (OFS), according to a new analysis published online.

Senior author Gini F. Fleming, MD, director of the medical oncology breast program at the University of Chicago Medical Center, and her colleagues analyzed data from a pair of international phase III randomized adjuvant trials: the Suppression of Ovarian Function Trial (SOFT) and the Tamoxifen and Exemestane Trial (TEXT).

Main analyses were based on a respective 240 and 145 women younger than 35 years who had undergone surgery for early hormone receptor–positive, HER2-negative early breast cancer, received chemotherapy, and were randomly assigned to 5 years of various adjuvant endocrine therapies.

In SOFT, the 5-year breast cancer–free interval was 67.1% (95% CI, 54.6%-76.9%) with tamoxifen (Nolvadex) alone, 75.9% (64.0%-84.4%) with tamoxifen plus OFS, and 83.2% (72.7%-90.0%) with exemestane (Aromasin) plus OFS (J Clin Oncol. 2017 June 27 doi: 10.1200/JCO.2016.72.0946). In TEXT, it was 79.2% (66.2%-87.7%) with tamoxifen plus OFS and 81.6% (69.8%-89.2%) with exemestane plus OFS.

In a quality of life analysis among women receiving OFS, vasomotor symptoms (hot flushes and sweats) showed greatest increase from baseline (roughly 30-40 points) in the first 6 months of therapy. Loss of sexual interest and difficulties in becoming aroused were also noteworthy (8 points or greater). However, scores for global quality of life (physical well-being, mood, coping effort, and health perception) showed little change from baseline and were essentially the same as those seen among premenopausal women aged 35 or older in the same trials.

Overall, 19.8% of the young women in SOFT and TEXT stopped all protocol-assigned endocrine therapy early. The proportion rose with time and was higher than that among the older premenopausal group.

“There was a meaningful clinical benefit in breast cancer outcomes with the addition of OFS to tamoxifen and some additional benefit from use of an aromatase inhibitor with OFS. Longer follow-up is critical to clarify potential survival benefits,” the investigators wrote. “There were substantial adverse effects from these combined endocrine treatments, but they were not different in the younger and older than 35 years populations. Despite this, rates of nonadherence were slightly higher in women younger than 35 years.

“Availability of these age-specific data regarding risks and benefits of combined endocrine therapy will support shared decision making regarding OFS among young women at high risk for recurrence and death from breast cancer and, it is hoped, improve adherence among those who select OFS,” they concluded.

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Young women treated for early hormone receptor–positive, HER2-negative breast cancer fare better if their adjuvant endocrine therapy includes ovarian function suppression (OFS), according to a new analysis published online.

Senior author Gini F. Fleming, MD, director of the medical oncology breast program at the University of Chicago Medical Center, and her colleagues analyzed data from a pair of international phase III randomized adjuvant trials: the Suppression of Ovarian Function Trial (SOFT) and the Tamoxifen and Exemestane Trial (TEXT).

Main analyses were based on a respective 240 and 145 women younger than 35 years who had undergone surgery for early hormone receptor–positive, HER2-negative early breast cancer, received chemotherapy, and were randomly assigned to 5 years of various adjuvant endocrine therapies.

In SOFT, the 5-year breast cancer–free interval was 67.1% (95% CI, 54.6%-76.9%) with tamoxifen (Nolvadex) alone, 75.9% (64.0%-84.4%) with tamoxifen plus OFS, and 83.2% (72.7%-90.0%) with exemestane (Aromasin) plus OFS (J Clin Oncol. 2017 June 27 doi: 10.1200/JCO.2016.72.0946). In TEXT, it was 79.2% (66.2%-87.7%) with tamoxifen plus OFS and 81.6% (69.8%-89.2%) with exemestane plus OFS.

In a quality of life analysis among women receiving OFS, vasomotor symptoms (hot flushes and sweats) showed greatest increase from baseline (roughly 30-40 points) in the first 6 months of therapy. Loss of sexual interest and difficulties in becoming aroused were also noteworthy (8 points or greater). However, scores for global quality of life (physical well-being, mood, coping effort, and health perception) showed little change from baseline and were essentially the same as those seen among premenopausal women aged 35 or older in the same trials.

Overall, 19.8% of the young women in SOFT and TEXT stopped all protocol-assigned endocrine therapy early. The proportion rose with time and was higher than that among the older premenopausal group.

“There was a meaningful clinical benefit in breast cancer outcomes with the addition of OFS to tamoxifen and some additional benefit from use of an aromatase inhibitor with OFS. Longer follow-up is critical to clarify potential survival benefits,” the investigators wrote. “There were substantial adverse effects from these combined endocrine treatments, but they were not different in the younger and older than 35 years populations. Despite this, rates of nonadherence were slightly higher in women younger than 35 years.

“Availability of these age-specific data regarding risks and benefits of combined endocrine therapy will support shared decision making regarding OFS among young women at high risk for recurrence and death from breast cancer and, it is hoped, improve adherence among those who select OFS,” they concluded.

 

Young women treated for early hormone receptor–positive, HER2-negative breast cancer fare better if their adjuvant endocrine therapy includes ovarian function suppression (OFS), according to a new analysis published online.

Senior author Gini F. Fleming, MD, director of the medical oncology breast program at the University of Chicago Medical Center, and her colleagues analyzed data from a pair of international phase III randomized adjuvant trials: the Suppression of Ovarian Function Trial (SOFT) and the Tamoxifen and Exemestane Trial (TEXT).

Main analyses were based on a respective 240 and 145 women younger than 35 years who had undergone surgery for early hormone receptor–positive, HER2-negative early breast cancer, received chemotherapy, and were randomly assigned to 5 years of various adjuvant endocrine therapies.

In SOFT, the 5-year breast cancer–free interval was 67.1% (95% CI, 54.6%-76.9%) with tamoxifen (Nolvadex) alone, 75.9% (64.0%-84.4%) with tamoxifen plus OFS, and 83.2% (72.7%-90.0%) with exemestane (Aromasin) plus OFS (J Clin Oncol. 2017 June 27 doi: 10.1200/JCO.2016.72.0946). In TEXT, it was 79.2% (66.2%-87.7%) with tamoxifen plus OFS and 81.6% (69.8%-89.2%) with exemestane plus OFS.

In a quality of life analysis among women receiving OFS, vasomotor symptoms (hot flushes and sweats) showed greatest increase from baseline (roughly 30-40 points) in the first 6 months of therapy. Loss of sexual interest and difficulties in becoming aroused were also noteworthy (8 points or greater). However, scores for global quality of life (physical well-being, mood, coping effort, and health perception) showed little change from baseline and were essentially the same as those seen among premenopausal women aged 35 or older in the same trials.

Overall, 19.8% of the young women in SOFT and TEXT stopped all protocol-assigned endocrine therapy early. The proportion rose with time and was higher than that among the older premenopausal group.

“There was a meaningful clinical benefit in breast cancer outcomes with the addition of OFS to tamoxifen and some additional benefit from use of an aromatase inhibitor with OFS. Longer follow-up is critical to clarify potential survival benefits,” the investigators wrote. “There were substantial adverse effects from these combined endocrine treatments, but they were not different in the younger and older than 35 years populations. Despite this, rates of nonadherence were slightly higher in women younger than 35 years.

“Availability of these age-specific data regarding risks and benefits of combined endocrine therapy will support shared decision making regarding OFS among young women at high risk for recurrence and death from breast cancer and, it is hoped, improve adherence among those who select OFS,” they concluded.

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Key clinical point: Tamoxifen or exemestane plus OFS appears superior to tamoxifen alone for averting recurrent or new disease in young breast cancer survivors.

Major finding: In SOFT, the 5-year breast cancer–free interval was 67.1% with tamoxifen alone, 75.9% with tamoxifen plus OFS, and 83.2% with exemestane plus OFS. In TEXT, it was 79.2% with tamoxifen plus OFS and 81.6% with exemestane plus OFS.

Data source: An analysis of women younger than 35 years treated for early hormone receptor–positive, HER2-negative breast cancer and given adjuvant endocrine therapy in the phase III randomized SOFT trial (240 women) or TEXT trial (145 women).

Disclosures: Dr. Fleming disclosed that she receives research funding from Corcept Therapeutics (institutional) and has a relationship with Aeterna Zentaris.

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Low-fat diet reduces risk of death if breast cancer is diagnosed

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Women can reduce their risk of dying should they receive a breast cancer diagnosis by following a low-fat diet, suggests an analysis from the phase III multicenter randomized Women’s Health Initiative Dietary Modification trial.

Investigators led by Rowan T. Chlebowski, MD, PhD, formerly of the Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, and now at City of Hope National Medical Center, Duarte, California, analyzed data from 48,835 postmenopausal women who had never had breast cancer and had normal mammograms. The women were randomly assigned 2:3 to a diet aimed at reducing fat intake to 20% of energy and increasing intake of fruits, vegetables, and grains or to a usual diet.

Dr. Rowan T. Chlebowski
During the median 8.5-year dietary intervention, the rate of deaths attributed to breast cancer was 0.016% per year in the low-fat diet group and 0.024% per year in the usual diet group, a difference that was not significant (P = .08), Dr. Chlebowski and associates reported (J Clin Oncol. 2017 June 27. doi: 10.1200/JCO.2016.72.0326).

However, the rate of deaths after breast cancer from any cause was 0.025% per year in the former group and 0.038% per year in the latter group, a difference that translated to a more than one-third reduction in risk (hazard ratio, 0.65; P = .02).

Similarly, during the median 16.1-year total follow-up, the rate of deaths attributed to breast cancer was 0.035% per year in the low-fat diet group and 0.039% per year in the usual diet group, a difference that was not significant (P =. 41). However, the rate of deaths after breast cancer from any cause was 0.085% per year in the former group and 0.11% per year in the latter group, a difference that translated to a nearly one-fifth reduction in the risk of death (HR, 0.82; P = .01).

In subgroup analyses, there were significant interactions whereby benefit was greater for women who had a baseline waist circumference of at least 88 cm and increased with the baseline percentage of total energy from fat.

“The lower risk of poor prognosis, ER+, PR– breast cancers … in the dietary group contributed to the favorable dietary effect on death after breast cancer,” the investigators noted. “An additional factor that potentially influenced deaths after breast cancer could be a favorable dietary influence on mortality as a result of other causes, including cardiovascular disease.”

“Future studies of other lifestyle interventions on breast cancer incidence and outcome could incorporate some form of a low-fat dietary pattern as a base,” they concluded.
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Women can reduce their risk of dying should they receive a breast cancer diagnosis by following a low-fat diet, suggests an analysis from the phase III multicenter randomized Women’s Health Initiative Dietary Modification trial.

Investigators led by Rowan T. Chlebowski, MD, PhD, formerly of the Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, and now at City of Hope National Medical Center, Duarte, California, analyzed data from 48,835 postmenopausal women who had never had breast cancer and had normal mammograms. The women were randomly assigned 2:3 to a diet aimed at reducing fat intake to 20% of energy and increasing intake of fruits, vegetables, and grains or to a usual diet.

Dr. Rowan T. Chlebowski
During the median 8.5-year dietary intervention, the rate of deaths attributed to breast cancer was 0.016% per year in the low-fat diet group and 0.024% per year in the usual diet group, a difference that was not significant (P = .08), Dr. Chlebowski and associates reported (J Clin Oncol. 2017 June 27. doi: 10.1200/JCO.2016.72.0326).

However, the rate of deaths after breast cancer from any cause was 0.025% per year in the former group and 0.038% per year in the latter group, a difference that translated to a more than one-third reduction in risk (hazard ratio, 0.65; P = .02).

Similarly, during the median 16.1-year total follow-up, the rate of deaths attributed to breast cancer was 0.035% per year in the low-fat diet group and 0.039% per year in the usual diet group, a difference that was not significant (P =. 41). However, the rate of deaths after breast cancer from any cause was 0.085% per year in the former group and 0.11% per year in the latter group, a difference that translated to a nearly one-fifth reduction in the risk of death (HR, 0.82; P = .01).

In subgroup analyses, there were significant interactions whereby benefit was greater for women who had a baseline waist circumference of at least 88 cm and increased with the baseline percentage of total energy from fat.

“The lower risk of poor prognosis, ER+, PR– breast cancers … in the dietary group contributed to the favorable dietary effect on death after breast cancer,” the investigators noted. “An additional factor that potentially influenced deaths after breast cancer could be a favorable dietary influence on mortality as a result of other causes, including cardiovascular disease.”

“Future studies of other lifestyle interventions on breast cancer incidence and outcome could incorporate some form of a low-fat dietary pattern as a base,” they concluded.

 

Women can reduce their risk of dying should they receive a breast cancer diagnosis by following a low-fat diet, suggests an analysis from the phase III multicenter randomized Women’s Health Initiative Dietary Modification trial.

Investigators led by Rowan T. Chlebowski, MD, PhD, formerly of the Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, and now at City of Hope National Medical Center, Duarte, California, analyzed data from 48,835 postmenopausal women who had never had breast cancer and had normal mammograms. The women were randomly assigned 2:3 to a diet aimed at reducing fat intake to 20% of energy and increasing intake of fruits, vegetables, and grains or to a usual diet.

Dr. Rowan T. Chlebowski
During the median 8.5-year dietary intervention, the rate of deaths attributed to breast cancer was 0.016% per year in the low-fat diet group and 0.024% per year in the usual diet group, a difference that was not significant (P = .08), Dr. Chlebowski and associates reported (J Clin Oncol. 2017 June 27. doi: 10.1200/JCO.2016.72.0326).

However, the rate of deaths after breast cancer from any cause was 0.025% per year in the former group and 0.038% per year in the latter group, a difference that translated to a more than one-third reduction in risk (hazard ratio, 0.65; P = .02).

Similarly, during the median 16.1-year total follow-up, the rate of deaths attributed to breast cancer was 0.035% per year in the low-fat diet group and 0.039% per year in the usual diet group, a difference that was not significant (P =. 41). However, the rate of deaths after breast cancer from any cause was 0.085% per year in the former group and 0.11% per year in the latter group, a difference that translated to a nearly one-fifth reduction in the risk of death (HR, 0.82; P = .01).

In subgroup analyses, there were significant interactions whereby benefit was greater for women who had a baseline waist circumference of at least 88 cm and increased with the baseline percentage of total energy from fat.

“The lower risk of poor prognosis, ER+, PR– breast cancers … in the dietary group contributed to the favorable dietary effect on death after breast cancer,” the investigators noted. “An additional factor that potentially influenced deaths after breast cancer could be a favorable dietary influence on mortality as a result of other causes, including cardiovascular disease.”

“Future studies of other lifestyle interventions on breast cancer incidence and outcome could incorporate some form of a low-fat dietary pattern as a base,” they concluded.
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Key clinical point: A low-fat diet appears to be an effective strategy for reducing risk of death should a woman receive a breast cancer diagnosis.

Major finding: Compared with peers assigned to a usual diet, women assigned to a low-fat diet were less likely to die after breast cancer diagnosis from any cause during both the 8.5-year intervention (HR 0.65) and the 16.1-year total follow-up (HR, 0.82).

Data source: A posthoc analysis of a phase III randomized controlled trial among 48,835 postmenopausal women who had never had breast cancer and had normal mammograms (Women’s Health Initiative Dietary Modification trial).

Disclosures: Dr. Chlebowski disclosed consulting or advisory roles with Novartis, Genentech, Amgen, Pfizer, and AstraZeneca. He is also on the Speakers’ Bureau for Novartis and Genentech.

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