Michel Henry-Amar

Dr. Michel Henry-Amar

orcid

Research Focus & Metrics

Academic Career Length

50Years (1977-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 1996 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
JCJ M Coindre
J M Coindre
PTP Terrier
P Terrier
NBN B Bui
N B Bui
FBF Bonichon
F Bonichon
FCF Collin
F Collin
GCG Contesso
G Contesso
PURPOSE: To define the prognostic factors in adult patients with locally controlled soft tissue sarcoma (STS) and to determine which patients should be considered for adjuvant treatment. PATIENTS AND METHODS: Five hundred forty-six patients with a nonmetastatic and locally controlled STS, collected in a cooperative data base by the French Federation of Cancer Centers (FNCLCC) Sarcoma Group from 1980 and 1989, were studied. Histologic slides of all patients were collegially reviewed. Initial treatment consisted of complete tumor resection with amputation in only 4% of the patients. Adjuvant radiotherapy was administered to 57.9% and adjuvant chemotherapy to 31%. Relationships between tumor characteristics were analyzed, and univariate and multivariate analyses were performed using Cox models for the hazards rate of tumor mortality, development of distant metastasis, and strictly local recurrence. RESULTS: Unfavorable characteristics with an independent prognostic value for tumor mortality were: grade 3 (P = 3 x 10(-10)), male sex (P = 1.5 x 10(-5)), no adjuvant chemotherapy (P = 5.4 x 10(-5)), tumor size > or = 5 cm (P = 3.8 x 10(-3)), and deep location (P = 4.6 x 10(-3)). Unfavorable characteristics for the development of distant metastasis were: grade 3 (P = 4 x 10(-12)), no adjuvant chemotherapy (P = 6.4 x 10(-4)), tumor size > or = 10 cm (P = 9.8 x 10(-4)), and deep location (P = 1.3 x 10(-3)). For the development of local recurrence, the unfavorable characteristics were: no adjuvant radiotherapy (P = 3.6 x 10(-6)), poor surgery (local excision) (P = 2 x 10(-4)), grade 3 (P = 7.6 x 10(-4)), and deep location (P = 10(-2)). Grade, depth, and tumor size were used to define groups of patients according to the metastatic risk. Adjuvant chemotherapy was beneficial in terms of overall survival and metastasis-free survival in grade 3 tumor patients only. Despite worse characteristics concerning tumor depth, tumor-node-metastasis (TNM) and American Joint Committee (AJC)/International Union Against Cancer (UICC) classifications and grade in patients with adjuvant radiotherapy, the latter experienced significantly fewer local recurrences than patients with no radiotherapy. CONCLUSION: Grade, tumor depth, and tumor size could be used to select patients with a high metastatic risk, for which adjuvant chemotherapy could be beneficial.

8 November 2007 in New England Journal of Medicine
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Journal Article
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CFChristophe Fermé
Christophe Fermé
HEHouchingue Eghbali
Houchingue Eghbali
JMJacobus H Meerwaldt
Jacobus H Meerwaldt
CRChantal Rieux
Chantal Rieux
JBJacques Bosq
Jacques Bosq
ETEortc-Gela H8 Trial
Eortc-Gela H8 Trial
Treatment of early-stage Hodgkin's disease is usually tailored in line with prognostic factors that allow for reductions in the amount of chemotherapy and extent of radiotherapy required for a possible cure.

14 October 1993 in New England Journal of Medicine
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GSGerard Socie
Gerard Socie
MHMichel Henry-Amar
Michel Henry-Amar
ABAndrea Bacigalupo
Andrea Bacigalupo
JHJill Hows
Jill Hows
ATAndre Tichelli
Andre Tichelli
EGEliane Gluckman
Eliane Gluckman
Recent studies have shown that long-term survivors of acquired aplastic anemia may be at high risk for malignant diseases. We assessed the risk of cancer after aplastic anemia was treated with immunosuppression or bone marrow transplantation and sought to identify risk factors according to treatment. The study population consisted of 860 patients treated by immunosuppression and 748 patients who had received bone marrow transplants for the treatment of severe aplastic anemia. The risk of cancer was analyzed overall and according to treatment relative to the risk in the general population. In calculating relative risk, we excluded patients with myelodysplastic syndromes or acute leukemias arising less than 6 months after treatment, and solid cancers arising less than 12 months after treatment, because of a possible association with aplastic anemia itself rather than with the treatment received. Forty-two malignant conditions were reported in the 860 patients who received immunosuppressive therapy: 19 cases of myelodysplastic syndrome, 15 cases of acute leukemia, 1 case of non-Hodgkin's lymphoma, and 7 solid tumors. Nine were reported in the 748 patients who received bone marrow transplants: two cases of acute leukemia and seven solid tumors. After the exclusions listed above, the overall relative risk of cancer was 5.50 (P<0.001) as compared with that in the general European population; the risk was 5.15 (P<0.001) after immunosuppressive therapy and 6.67 (P<0.001) after transplantation. The 10-year cumulative incidence rate of cancer was 18.8 percent after immunosuppressive therapy and 3.1 percent after transplantation. The risk factors for myelodysplastic syndrome or acute leukemia after immunosuppressive therapy included the addition of androgens to the immunosuppressive treatment (relative risk = 0.28), older age (relative risk = 1.03), treatment in 1982 or later, as compared with 1981 or earlier (relative risk = 3.01), splenectomy (relative risk = 3.65), and treatment with multiple courses of immunosuppression (relative risk = 2.26). Risk factors for solid tumors after bone marrow transplantation were age (relative risk = 1.11 per year) and the use of radiation as a conditioning regimen before transplantation (relative risk = 9.56); such tumors occurred only in male patients. Survivors of aplastic anemia are at high risk for subsequent malignant conditions. Myelodysplastic syndrome and acute leukemia tend to follow immunosuppressive therapy, whereas the incidence of solid tumors is similar after immunosuppression and after bone marrow transplantation.

4 January 1990 in New England Journal of Medicine
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JKJohn M. Kaldor
John M. Kaldor
NDNicholas E. Day
Nicholas E. Day
ECE. Aileen Clarke
E. Aileen Clarke
FLFlora E. Van Leeuwen
Flora E. Van Leeuwen
MHMichel Henry-Amar
Michel Henry-Amar
MSMarilyn Stovall
Marilyn Stovall
To investigate the effect of different treatments for Hodgkin's disease on the risk of leukemia, we used an international collaborative group of cancer registries and hospitals to perform a case–control study of 163 cases of leukemia following treatment for Hodgkin's disease. For each case patient with leukemia, three matched controls were chosen who had been treated for Hodgkin's disease but in whom leukemia did not develop. The use of chemotherapy alone to treat Hodgkin's disease was associated with a relative risk of leukemia of 9.0 (95 percent confidence interval, 4.1 to 20) as compared with the use of radiotherapy alone. Patients treated with both had a relative risk of 7.7 (95 percent confidence interval, 3.9 to 15). After treatment with more than six cycles of combinations including procarbazine and mechlorethamine, the risk of leukemia was 14-fold higher than after radiotherapy alone. The use of radiotherapy in combination with chemotherapy did not increase the risk of leukemia above that produced by the use of chemotherapy alone, but there was a dose-related increase in the risk of leukemia in patients who received radiotherapy alone. The peak in the risk of leukemia came about five years after chemotherapy began, and a large excess persisted for at least eight years after it ended. After adjusting for drug regimen, we found that patients who had undergone splenectomy had at least double the risk of leukemia of patients who had not, and an advanced stage of Hodgkin's disease carried a somewhat higher risk of leukemia than Stage I disease. We conclude that chemotherapy for Hodgkin's disease greatly increases the risk of leukemia and that this increased risk appears to be dose-related and unaffected by concomitant radiotherapy. In addition, the risk is greater for patients with more advanced stages of Hodgkin's disease and for those who undergo splenectomy. (N Engl J Med 1990; 322:7–13.)

12 June 2003 in New England Journal of Medicine
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BABerthe M.P. Aleman
Berthe M.P. Aleman
JRJohn M.M. Raemaekers
John M.M. Raemaekers
UTUmberto Tirelli
Umberto Tirelli
RBRoberto Bortolus
Roberto Bortolus
MVMars B. van 'T Veer
Mars B. van 'T Veer
MHMichel Henry-Amar
Michel Henry-Amar
The use of involved-field radiotherapy after chemotherapy for advanced Hodgkin's lymphoma is controversial.

1 July 2006 in Journal of Clinical Oncology
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Journal Article
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ENEvert M. Noordijk
Evert M. Noordijk
PCPatrice Carde
Patrice Carde
NDNoëlle Dupouy
Noëlle Dupouy
AHAnton Hagenbeek
Anton Hagenbeek
AKAugustinus D.G. Krol
Augustinus D.G. Krol
MHMichel Henry-Amar
Michel Henry-Amar
Purpose In early-stage Hodgkin's lymphoma (HL), subtotal nodal irradiation (STNI) and combined chemotherapy/radiotherapy produce high disease control rates but also considerable late toxicity. The aim of this study was to reduce this toxicity using a combination of low-intensity chemotherapy and involved-field radiotherapy (IF-RT) without jeopardizing disease control. Patients and Methods Patients with stage I or II HL were stratified into two groups, favorable and unfavorable, based on the following four prognostic factors: age, symptoms, number of involved areas, and mediastinal-thoracic ratio. The experimental therapy consisted of six cycles of epirubicin, bleomycin, vinblastine, and prednisone (EBVP) followed by IF-RT. It was randomly compared, in favorable patients, to STNI and, in unfavorable patients, to six cycles of mechlorethamine, vincristine, procarbazine, prednisone, doxorubicin, bleomycin, and vinblastine (MOPP/ABV hybrid) and IF-RT. Results Median follow-up time of the 722 patients included was 9 years. In 333 favorable patients, the 10-year event-free survival rates (EFS) were 88% in the EBVP arm and 78% in the STNI arm (P = .0113), with similar 10-year overall survival (OS) rates (92% v 92%, respectively; P = .79). In 389 unfavorable patients, the 10-year EFS rate was 88% in the MOPP/ABV arm compared with 68% in the EBVP arm (P < .001), leading to 10-year OS rates of 87% and 79%, respectively (P = .0175). Conclusion A treatment strategy for early-stage HL based on prognostic factors leads to high OS rates in both favorable and unfavorable patients. In favorable patients, the combination of EBVP and IF-RT can replace STNI as standard treatment. In unfavorable patients, EBVP is significantly less efficient than MOPP/ABV.