<SEC-DOCUMENT>0001209191-23-051175.txt : 20231002
<SEC-HEADER>0001209191-23-051175.hdr.sgml : 20231002
<ACCEPTANCE-DATETIME>20231002180158
ACCESSION NUMBER:		0001209191-23-051175
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230929
FILED AS OF DATE:		20231002
DATE AS OF CHANGE:		20231002

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LAPPE RODNEY W
		CENTRAL INDEX KEY:			0001579826

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40288
		FILM NUMBER:		231300945

	MAIL ADDRESS:	
		STREET 1:		C/O MIRATI THERAPEUTICS INC.
		STREET 2:		4660 LA JOLLA VILLAGE DRIVE, SUITE 500
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Design Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001807120
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				823929248
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6005 HIDDEN VALLEY ROAD
		STREET 2:		SUITE 110
		CITY:			CARLSBAD
		STATE:			CA
		ZIP:			92011
		BUSINESS PHONE:		858-293-4900

	MAIL ADDRESS:	
		STREET 1:		6005 HIDDEN VALLEY ROAD
		STREET 2:		SUITE 110
		CITY:			CARLSBAD
		STATE:			CA
		ZIP:			92011
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-09-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001807120</issuerCik>
        <issuerName>Design Therapeutics, Inc.</issuerName>
        <issuerTradingSymbol>DSGN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001579826</rptOwnerCik>
            <rptOwnerName>LAPPE RODNEY W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O DESIGN THERAPEUTICS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>6005 HIDDEN VALLEY ROAD, SUITE 110</rptOwnerStreet2>
            <rptOwnerCity>CARLSBAD</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92011</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-09-29</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>21000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.347</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>133024</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in column 4 is a weighted average price. The shares were purchased at a range of prices between $2.33 and $2.38.  Upon request by the Securities and Exchange Commission staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares purchased at each separate price will be provided.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mustapha Parekh, Attorney-in-Fact</signatureName>
        <signatureDate>2023-10-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
