-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 pmaO2UDOk0Lzbnh+wg3n1Q==

<SEC-DOCUMENT>0001267075-05-000003.txt : 20050914
<SEC-HEADER>0001267075-05-000003.hdr.sgml : 20050914
<ACCEPTANCE-DATETIME>20050914154936
ACCESSION NUMBER:		0001267075-05-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050913
FILED AS OF DATE:		20050914
DATE AS OF CHANGE:		20050914

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTROGEN THERAPEUTICS INC
		CENTRAL INDEX KEY:			0001018710
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				742704230
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		301 CONGRESS AVE
		STREET 2:		SUITE 1850
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78701
		BUSINESS PHONE:		5127089310

	MAIL ADDRESS:	
		STREET 1:		301 CONGRESS AVE
		STREET 2:		SUITE 1850
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78701

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			AVENTIS HOLDINGS INC
		CENTRAL INDEX KEY:			0001267075
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21291
		FILM NUMBER:		051084439

	BUSINESS ADDRESS:	
		STREET 1:		3711 KENNETH PIKE
		CITY:			GREENVILLE
		STATE:			DE
		ZIP:			19807
		BUSINESS PHONE:		3027777222

	MAIL ADDRESS:	
		STREET 1:		3711 KENNETH PIKE
		CITY:			GREENVILLE
		STATE:			DE
		ZIP:			19807

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			AVENTIS INC
		CENTRAL INDEX KEY:			0000217028
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21291
		FILM NUMBER:		051084440

	BUSINESS ADDRESS:	
		STREET 1:		500 ARCOLA RD
		STREET 2:		P O BOX 1200 M/S 5B14
		CITY:			COLLEGEVILLE
		STATE:			PA
		ZIP:			19426-0107
		BUSINESS PHONE:		6104548000

	FORMER NAME:	
		FORMER CONFORMED NAME:	RHONE POULENC RORER INC
		DATE OF NAME CHANGE:	19920703

	FORMER NAME:	
		FORMER CONFORMED NAME:	RORER GROUP INC
		DATE OF NAME CHANGE:	19900731

	FORMER NAME:	
		FORMER CONFORMED NAME:	RORER AMCHEM INC
		DATE OF NAME CHANGE:	19770604
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-09-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001018710</issuerCik>
        <issuerName>INTROGEN THERAPEUTICS INC</issuerName>
        <issuerTradingSymbol>INGN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000217028</rptOwnerCik>
            <rptOwnerName>AVENTIS INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>300 SOMERSET CORPORATE BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BRIDGEWATER</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08807</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>10% owner and beneficial owner</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001267075</rptOwnerCik>
            <rptOwnerName>AVENTIS HOLDINGS INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3711 KENNETT PIKE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GREENVILLE</rptOwnerCity>
            <rptOwnerState>DE</rptOwnerState>
            <rptOwnerZipCode>19807</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>10% owner and beneficial owner</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common</value>
            </securityTitle>
            <transactionDate>
                <value>2005-09-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>28272</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.75</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2194040</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>SFN</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Owned directly by Aventis Holdings Inc. and beneficially by Aventis Inc.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Joseph F. Haggerty, Vice President</signatureName>
        <signatureDate>2005-09-14</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Joseph M. Palladino, President</signatureName>
        <signatureDate>2005-09-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----