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GESIDA Phase I clinical trial of an intranodally administered mrna-based therapeutic vaccine against HIV-1 infection

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Phase I clinical trial of an intranodally

administered

mRNA-based

therapeutic

vaccine against HIV-1 infection

Lorna Leal, Alberto C. Guardo, Sara Moron-López, Maria Salgado, Beatriz Mothe, Carlo Heirman, Pieter

Pannus, Guido Vanham, Henk Jan van den Ham, Rob Gruters, Arno Andeweg, Sonja Van Meirvenne, Judit

Pich, Joan Albert Arnaiz, Josep M. Gatell, Christian Brander, Kris Thielemans, Javier Martínez-Picado,

Montserrat Plana, Felipe García, on behalf of the iHIVARNA consortium

(2)

INTRODUCCIÓN

A pesar de los múltiples beneficios del TARV una de sus limitaciones es que es incapaz de curar o erradicar la

infección por VIH. Encontrar una cura que sea bien tolerada, costeable y escalable es una prioridad.

VACUNAS TERAPÉÚTICAS

G O R R Y , R E T R O V I R O L O G Y 2 0 0 7 ; L E A L , A I D S 2 0 1 8 ; V A N D E R J E U G H T , O N C O T A R G E T 2 0 2 0 1 4 ; M O T H E , J T R A N S L M E D 2 0 1 1 A N D 2 0 1 5 ; G U A R D O , A I D S 2 0 1 7

Hemos llevado a cabo el primer ensayo

clínico fase 1 dosis-escalada con mRNA

desnudo conteniendo un activador de

células

dendríticas

(TriMix)

y

codificando

una

novel

secuencia

inmunogénica para redirigir la respuesta

de las células T a los target virales más

vulnerables (HTI) en individuos con una

infección crónica por VIH

 Endpoints primarios:  Seguridad

 Feasibility

 Endpoints secundarios exploratorios  Inmunogenicidad

 Cambios en el reservorio  Transcriptómica

(3)

ASSIGNATION

OF COHORTS

METHODS

All patients within a group were observed for 2 weeks after 3rd vaccine before starting with next dose group

06/2015-10/2016 Barcelona - Unicéntrico

21 individuos

Infección por VIH crónica

En TARV estable

CV<50 copias/ml – CD4 > 450 células/mm

3

Each patient observed for 1 week before next patient was treated

If 2 or more develop a DLT, consultation to DSMB

Group 4 & 5: If 2 or more develop a DLT, reduce dose as previous group

(4)

n=21 Group 1 (n=3) Group 2 (n=3) Group 3 (n=3) Group 4 (n=6) Group 5 (n=6) Median age (IQR) 48 (48-51) 51 (48-51) 45 (37-46) 55 (53-57) 47 (43-55)

Male 2 2 2 4 6

MSM 2 2 2 4 6

Heterosexual 1 1 1 0 0

Intravenous drug user 0 0 0 2¥ 0

HCV infection 0 0 0 2* 0 Baseline median CD4 (IQR) 762 (686-770) 726 (716-824) 821 (741-957) 829 (680-1124) 904 (868-1071) Week 6 median CD4 (IQR) 672 (663-683) 938 (784-993) 643 (589-1040) 819 (640-928) 956 (805-1053)

Variable

Value

Val

I

II

III

IV

V

All

Severity

Grade 1

N

3

4

1

9

2 19

%

75 57 20 82

40 59

Grade 2

N

1

3

3

2

3 12

%

25 43 60 18

60 38

Grade 3

N

0

0

1

0

0

1

%

0

0

20

0

0

3

All

N

4

7

5 11

5 32

Casual relationship

Definite relationship N

2

0

0

0

0

2

%

50

0

0

0

0

6

Probable relationship N

0

0

0

0

0

0

%

0

0

0

0

0

0

Possible relationship N

1

4

3

6

0 14

%

75 57 60 55

0 44

No related

N

1

3

2

5

5 16

%

75 43 40 45 100 50

Unknown

N

0

0

0

0

0

0

%

0

0

0

0

0

0

All

N

4

7

5 11

5 32

CLINICAL CHARACTERISTICS OF PARTICIPANTS

Total adverse events according severity and relationship

RESULTS - SAFETY

(5)

RESULTS - IMMUNOGENICITY

RESULTS – RESERVOIR + USVL

Semana 8: los pacientes que han

recibido la dosis más alta de

iHIVARNA mostraron un moderado incremento en las respuestas T que abarcaban la secuencia de HTI (IN), mientras no hubo respuestas contra el resto del proteome (OUT)

La carga viral ultrasensible aumentó significativamente en las semanas 6 y 8 en los grupos 4 y 5 y regresó al basal al final del estudio.

Aumento transitorio entre w4 y w6 en la expresión de RNA asociado a células en los grupos que recibieron las dosis más altas de iHIVARNA y que subsecuentemente se normalizó a las w8 y w24

(6)

CONCLUSIONS

In conclusion, this phase I exploratory dose-escalating trial showed that

iHIVARNA vaccination was

feasible, harmless and well tolerated

,

was

able to induce moderate HIV-specific immune responses

and

transiently increased caHIV-RNA expression and ultrasensitive

plasma viremia

. These data support further exploration of iHIVARNA

in a phase II clinical trial.

(7)

Institut d’Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain: Lorna Leal, Blanca Paño, Carlos Nicolau, Amparo Tricas, Marta Sala, Encarnación Moreno, Cristina Rovira, Carmen Hurtado, Constanza

Lucero, Irene Fernandez, Alberto C. Guardo,

Manel Bargalló, Miriam García, Alexy Inciarte, Ismael Pérez, Laura Mensa, Laura Mendoza, Anna Vanesa Oliveira, M Jose Maleno, Agathe Leon, Maria Joyera, Judit Pich, Jose M Gatell, Joan A Arnaiz, Montserrat Plana, Felipe García.

Instituut voor Tropische Geneeskunde (ITM), Antwerp, Belgium: Guido Vanham, Eric Florence, Jozefien Buyze, Pieter Pannus.

Vrije Universiteit Brussel (VUB), Brussels,

Belgium: Kris Thielemans, Joeri Aerts, Sabine

Allard, Patrick Lacor, Nik Claesen, Elger Vercayie, Patrick Tjok.

eTheRNA BVBA (eTheRNA), Brussels, Belgium: Carlo Heirman, Sonja Van Meirvenne, Hilde Van Raemdonck, An Van Nuffel, Jacques Berlo, Inge Pettersson, Gust Schols.

Erasmus Universitair Medisch Centrum Rotterdam (EMC), Rotterdam, Netherlands: Rob Gruters, Marion Koopmans, Wesley de Jong, Henk-Jan van den Ham, Patrick Boers, Rachel Scheuer, Eric Van Gorp, Cynthia Lungu, Arno

Andeweg, Ab Osterhaus.

irsiCaixa AIDS Research Institute, Badalona, Spain: Christian Brander, Bonaventura Clotet, Marta Marszalek, Sara Moron-Lopez, Beatriz Mothe, Alex Olvera, Miriam Rosas, Maria Salgado, Javier Martinez-Picado, Mireia Manent, Judith Dalmau.

Synapse Research Management Partners S.L. (SYNAPSE), Barcelona, Spain: Carlos Díaz, Montse Camprubí.

Asphalion, S.L. (ASPHALION), Barcelona,

Spain: Lídia Canovas, Níria Coderch, Marta Rayo Lunar y Joel Montané

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