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Efficacy and safety of Privigen® in patients with chronic inflammatory demyelinating polyneuropathy: results of a prospective, single‐arm, open‐label Phase III study (the PRIMA study)

Identifieur interne : 001172 ( Istex/Corpus ); précédent : 001171; suivant : 001173

Efficacy and safety of Privigen® in patients with chronic inflammatory demyelinating polyneuropathy: results of a prospective, single‐arm, open‐label Phase III study (the PRIMA study)

Auteurs : Jean-Marc Léger ; Jan L. De Bleecker ; Claudia Sommer ; Wim Robberecht ; Mika Saarela ; Jerzy Kamienowski ; Zbigniew Stelmasiak ; Orell Mielke ; Björn Tackenberg ; Amgad Shebl ; Artur Bauhofer ; Othmar Zenker ; Ingemar S. J. Merkies

Source :

RBID : ISTEX:4499980138C56F9612808B836593D865DE2D44CA

Abstract

This prospective, multicenter, single‐arm, open‐label Phase III study aimed to evaluate the efficacy and safety of Privigen® (10% liquid human intravenous immunoglobulin [IVIG], stabilized with l‐proline) in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). Patients received one induction dose of Privigen (2 g/kg body weight [bw]) and up to seven maintenance doses (1 g/kg bw) at 3‐week intervals. The primary efficacy endpoint was the responder rate at completion, defined as improvement of ≥1 point on the adjusted Inflammatory Neuropathy Cause and Treatment (INCAT) disability scale. The preset success criterion was the responder rate being ≥35%. Of the 31 screened patients, 28 patients were enrolled including 13 (46.4%) IVIG‐pretreated patients. The overall responder rate at completion was 60.7% (95% confidence interval [CI]: 42.41%–76.43%). IVIG‐pretreated patients demonstrated a higher responder rate than IVIG‐naïve patients (76.9% vs. 46.7%). The median (25%–75% quantile) INCAT score improved from 3.5 (3.0–4.5) points at baseline to 2.5 (1.0–3.0) points at completion, as did the mean (standard deviation [SD]) maximum grip strength (66.7 [37.24] kPa vs. 80.9 [31.06] kPa) and the median Medical Research Council sum score (67.0 [61.5–72.0] points vs. 75.5 [71.5–79.5] points). Of 108 adverse events (AEs; 0.417 AEs per infusion), 95 AEs (88.0%) were mild or moderate in intensity and resolved by the end of study. Two serious AEs of hemolysis were reported that resolved after discontinuation of treatment. Thus, Privigen provided efficacious and well‐tolerated induction and maintenance treatment in patients with CIDP.

Url:
DOI: 10.1111/jns5.12017

Links to Exploration step

ISTEX:4499980138C56F9612808B836593D865DE2D44CA

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<div type="abstract">This prospective, multicenter, single‐arm, open‐label Phase III study aimed to evaluate the efficacy and safety of Privigen® (10% liquid human intravenous immunoglobulin [IVIG], stabilized with l‐proline) in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). Patients received one induction dose of Privigen (2 g/kg body weight [bw]) and up to seven maintenance doses (1 g/kg bw) at 3‐week intervals. The primary efficacy endpoint was the responder rate at completion, defined as improvement of ≥1 point on the adjusted Inflammatory Neuropathy Cause and Treatment (INCAT) disability scale. The preset success criterion was the responder rate being ≥35%. Of the 31 screened patients, 28 patients were enrolled including 13 (46.4%) IVIG‐pretreated patients. The overall responder rate at completion was 60.7% (95% confidence interval [CI]: 42.41%–76.43%). IVIG‐pretreated patients demonstrated a higher responder rate than IVIG‐naïve patients (76.9% vs. 46.7%). The median (25%–75% quantile) INCAT score improved from 3.5 (3.0–4.5) points at baseline to 2.5 (1.0–3.0) points at completion, as did the mean (standard deviation [SD]) maximum grip strength (66.7 [37.24] kPa vs. 80.9 [31.06] kPa) and the median Medical Research Council sum score (67.0 [61.5–72.0] points vs. 75.5 [71.5–79.5] points). Of 108 adverse events (AEs; 0.417 AEs per infusion), 95 AEs (88.0%) were mild or moderate in intensity and resolved by the end of study. Two serious AEs of hemolysis were reported that resolved after discontinuation of treatment. Thus, Privigen provided efficacious and well‐tolerated induction and maintenance treatment in patients with CIDP.</div>
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<persName>
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<forename type="first">Ingemar S. J.</forename>
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<p>This prospective, multicenter, single‐arm, open‐label Phase III study aimed to evaluate the efficacy and safety of Privigen® (10% liquid human intravenous immunoglobulin [IVIG], stabilized with l‐proline) in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). Patients received one induction dose of Privigen (2 g/kg body weight [bw]) and up to seven maintenance doses (1 g/kg bw) at 3‐week intervals. The primary efficacy endpoint was the responder rate at completion, defined as improvement of ≥1 point on the adjusted Inflammatory Neuropathy Cause and Treatment (INCAT) disability scale. The preset success criterion was the responder rate being ≥35%. Of the 31 screened patients, 28 patients were enrolled including 13 (46.4%) IVIG‐pretreated patients. The overall responder rate at completion was 60.7% (95% confidence interval [CI]: 42.41%–76.43%). IVIG‐pretreated patients demonstrated a higher responder rate than IVIG‐naïve patients (76.9% vs. 46.7%). The median (25%–75% quantile) INCAT score improved from 3.5 (3.0–4.5) points at baseline to 2.5 (1.0–3.0) points at completion, as did the mean (standard deviation [SD]) maximum grip strength (66.7 [37.24] kPa vs. 80.9 [31.06] kPa) and the median Medical Research Council sum score (67.0 [61.5–72.0] points vs. 75.5 [71.5–79.5] points). Of 108 adverse events (AEs; 0.417 AEs per infusion), 95 AEs (88.0%) were mild or moderate in intensity and resolved by the end of study. Two serious AEs of hemolysis were reported that resolved after discontinuation of treatment. Thus, Privigen provided efficacious and well‐tolerated induction and maintenance treatment in patients with CIDP.</p>
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<i>Address correspondence to</i>
: Prof. Dr. Jean‐Marc Léger, Groupe Hospitalier Pitié‐Salpêtrière, Unité de Pathologie Neuro‐Musculaire, 47–83 Boulevard de l'Hôpital, Paris, 75651, France. Tel: +33 1 42 16 37 73; Fax: +33 1 42 16 37 93, E‐mail:
<email>jean-marc.leger@psl.aphp.fr</email>
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<titleGroup>
<title type="main">Efficacy and safety of Privigen
<sup>®</sup>
in patients with chronic inflammatory demyelinating polyneuropathy: results of a prospective, single‐arm, open‐label Phase
<fc>III</fc>
study (the
<fc>PRIMA</fc>
study)</title>
<title type="shortAuthors">Léger et al</title>
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<personName>
<givenNames>Jan L.</givenNames>
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<personName>
<givenNames>Claudia</givenNames>
<familyName>Sommer</familyName>
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<givenNames>Wim</givenNames>
<familyName>Robberecht</familyName>
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<personName>
<givenNames>Mika</givenNames>
<familyName>Saarela</familyName>
</personName>
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<givenNames>Jerzy</givenNames>
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<country>France</country>
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<orgDiv>Department of Neurology</orgDiv>
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<affiliation countryCode="NL" type="organization" xml:id="jns512017-aff-0010">
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<keyword xml:id="jns512017-kwd-0001">chronic inflammatory demyelinating polyneuropathy</keyword>
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<fc>INCAT</fc>
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<p xml:id="jns512017-para-0001">This prospective, multicenter, single‐arm, open‐label Phase
<fc>III</fc>
study aimed to evaluate the efficacy and safety of Privigen
<sup>®</sup>
(10% liquid human intravenous immunoglobulin [
<fc>IVIG</fc>
], stabilized with
<sc>l</sc>
‐proline) in patients with chronic inflammatory demyelinating polyneuropathy (
<fc>CIDP</fc>
). Patients received one induction dose of Privigen (2 g/kg body weight [bw]) and up to seven maintenance doses (1 g/kg bw) at 3‐week intervals. The primary efficacy endpoint was the responder rate at completion, defined as improvement of ≥1 point on the adjusted Inflammatory Neuropathy Cause and Treatment (
<fc>INCAT</fc>
) disability scale. The preset success criterion was the responder rate being ≥35%. Of the 31 screened patients, 28 patients were enrolled including 13 (46.4%)
<fc>IVIG</fc>
‐pretreated patients. The overall responder rate at completion was 60.7% (95% confidence interval [
<fc>CI</fc>
]: 42.41%–76.43%).
<fc>IVIG</fc>
‐pretreated patients demonstrated a higher responder rate than
<fc>IVIG</fc>
‐naïve patients (76.9% vs. 46.7%). The median (25%–75% quantile)
<fc>INCAT</fc>
score improved from 3.5 (3.0–4.5) points at baseline to 2.5 (1.0–3.0) points at completion, as did the mean (standard deviation [
<fc>SD</fc>
]) maximum grip strength (66.7 [37.24]
<fc>kPa</fc>
vs. 80.9 [31.06]
<fc>kPa</fc>
) and the median Medical Research Council sum score (67.0 [61.5–72.0] points vs. 75.5 [71.5–79.5] points). Of 108 adverse events (
<fc>AEs</fc>
; 0.417
<fc>AEs</fc>
per infusion), 95
<fc>AEs</fc>
(88.0%) were mild or moderate in intensity and resolved by the end of study. Two serious
<fc>AEs</fc>
of hemolysis were reported that resolved after discontinuation of treatment. Thus, Privigen provided efficacious and well‐tolerated induction and maintenance treatment in patients with
<fc>CIDP</fc>
.</p>
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<i>See Appendix for complete list of Study group members</i>
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<title>Efficacy and safety of Privigen® in patients with chronic inflammatory demyelinating polyneuropathy: results of a prospective, single‐arm, open‐label Phase III study (the PRIMA study)</title>
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<description>Correspondence: : Prof. Dr. Jean‐Marc Léger, Groupe Hospitalier Pitié‐Salpêtrière, Unité de Pathologie Neuro‐Musculaire, 47–83 Boulevard de l'Hôpital, Paris, 75651, France. Tel: +33 1 42 16 37 73; Fax: +33 1 42 16 37 93, E‐mail: </description>
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<name type="personal">
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<name type="personal">
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<name type="personal">
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<name type="personal">
<namePart type="given">Amgad</namePart>
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<name type="personal">
<namePart type="given">Artur</namePart>
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<name type="personal">
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<name type="personal">
<namePart type="given">Ingemar S. J.</namePart>
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<publisher>Wiley Periodicals, Inc.</publisher>
<place>
<placeTerm type="text">Malden, USA</placeTerm>
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<dateIssued encoding="w3cdtf">2013-06</dateIssued>
<dateCreated encoding="w3cdtf">2013-05-20</dateCreated>
<dateCaptured encoding="w3cdtf">2012-11-09</dateCaptured>
<dateValid encoding="w3cdtf">2013-04-09</dateValid>
<copyrightDate encoding="w3cdtf">2013</copyrightDate>
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<languageTerm type="code" authority="rfc3066">en</languageTerm>
<languageTerm type="code" authority="iso639-2b">eng</languageTerm>
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<abstract>This prospective, multicenter, single‐arm, open‐label Phase III study aimed to evaluate the efficacy and safety of Privigen® (10% liquid human intravenous immunoglobulin [IVIG], stabilized with l‐proline) in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). Patients received one induction dose of Privigen (2 g/kg body weight [bw]) and up to seven maintenance doses (1 g/kg bw) at 3‐week intervals. The primary efficacy endpoint was the responder rate at completion, defined as improvement of ≥1 point on the adjusted Inflammatory Neuropathy Cause and Treatment (INCAT) disability scale. The preset success criterion was the responder rate being ≥35%. Of the 31 screened patients, 28 patients were enrolled including 13 (46.4%) IVIG‐pretreated patients. The overall responder rate at completion was 60.7% (95% confidence interval [CI]: 42.41%–76.43%). IVIG‐pretreated patients demonstrated a higher responder rate than IVIG‐naïve patients (76.9% vs. 46.7%). The median (25%–75% quantile) INCAT score improved from 3.5 (3.0–4.5) points at baseline to 2.5 (1.0–3.0) points at completion, as did the mean (standard deviation [SD]) maximum grip strength (66.7 [37.24] kPa vs. 80.9 [31.06] kPa) and the median Medical Research Council sum score (67.0 [61.5–72.0] points vs. 75.5 [71.5–79.5] points). Of 108 adverse events (AEs; 0.417 AEs per infusion), 95 AEs (88.0%) were mild or moderate in intensity and resolved by the end of study. Two serious AEs of hemolysis were reported that resolved after discontinuation of treatment. Thus, Privigen provided efficacious and well‐tolerated induction and maintenance treatment in patients with CIDP.</abstract>
<note type="funding">CSL Behring AG</note>
<subject>
<genre>keywords</genre>
<topic>chronic inflammatory demyelinating polyneuropathy</topic>
<topic>INCAT</topic>
<topic>IVIG</topic>
<topic>PRIMA</topic>
<topic>Privigen®</topic>
</subject>
<relatedItem type="host">
<titleInfo>
<title>Journal of the Peripheral Nervous System</title>
</titleInfo>
<titleInfo type="abbreviated">
<title>J Peripher Nerv Syst</title>
</titleInfo>
<genre type="journal">journal</genre>
<subject>
<genre>article-category</genre>
<topic>RESEARCH REPORT</topic>
</subject>
<identifier type="ISSN">1085-9489</identifier>
<identifier type="eISSN">1529-8027</identifier>
<identifier type="DOI">10.1111/(ISSN)1529-8027</identifier>
<identifier type="PublisherID">JNS</identifier>
<part>
<date>2013</date>
<detail type="volume">
<caption>vol.</caption>
<number>18</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>2</number>
</detail>
<extent unit="pages">
<start>130</start>
<end>140</end>
<total>11</total>
</extent>
</part>
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<identifier type="istex">4499980138C56F9612808B836593D865DE2D44CA</identifier>
<identifier type="DOI">10.1111/jns5.12017</identifier>
<identifier type="ArticleID">JNS512017</identifier>
<accessCondition type="use and reproduction" contentType="creativeCommonsBy">This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.</accessCondition>
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<recordOrigin>Wiley Periodicals, Inc.</recordOrigin>
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